./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_label43+token_ring.02.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 c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:55:05,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:55:05,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:55:05,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:55:05,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:55:05,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:55:05,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:55:05,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:55:05,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:55:05,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:55:05,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:55:05,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:55:05,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:55:05,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:55:05,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:55:05,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:55:05,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:55:05,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:55:05,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:55:05,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:55:05,764 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:55:05,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:55:05,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:55:05,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:55:05,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:55:05,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:55:05,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:55:05,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:55:05,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:55:05,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:55:05,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:55:05,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:55:05,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:55:05,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:55:05,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:55:05,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:55:05,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:55:05,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:55:05,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:55:05,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:55:05,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:55:05,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:55:05,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:55:05,810 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:55:05,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:55:05,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:55:05,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:55:05,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:55:05,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:55:05,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:55:05,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:55:05,813 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:55:05,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:55:05,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:55:05,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:55:05,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:55:05,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:55:05,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:55:05,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:55:05,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:55:05,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:55:05,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:55:05,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:55:05,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:55:05,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:55:05,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:55:05,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:55:05,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:55:05,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:55:05,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:55:05,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:55:05,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:55:05,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:55:05,818 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:55:05,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:55:05,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:55:05,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c [2022-07-13 19:55:06,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:55:06,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:55:06,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:55:06,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:55:06,136 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:55:06,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2022-07-13 19:55:06,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68576abd/60f57675ba564d2a93a8142437aa82e7/FLAGb79d0e273 [2022-07-13 19:55:07,091 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:55:07,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2022-07-13 19:55:07,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68576abd/60f57675ba564d2a93a8142437aa82e7/FLAGb79d0e273 [2022-07-13 19:55:07,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68576abd/60f57675ba564d2a93a8142437aa82e7 [2022-07-13 19:55:07,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:55:07,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:55:07,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:55:07,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:55:07,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:55:07,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:55:07" (1/1) ... [2022-07-13 19:55:07,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f1c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:07, skipping insertion in model container [2022-07-13 19:55:07,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:55:07" (1/1) ... [2022-07-13 19:55:07,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:55:07,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:55:08,795 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_label43+token_ring.02.cil-1.c[381679,381692] [2022-07-13 19:55:08,817 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_label43+token_ring.02.cil-1.c[383339,383352] [2022-07-13 19:55:08,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:55:08,963 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:55:09,831 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_label43+token_ring.02.cil-1.c[381679,381692] [2022-07-13 19:55:09,834 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_label43+token_ring.02.cil-1.c[383339,383352] [2022-07-13 19:55:09,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:55:09,909 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:55:09,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09 WrapperNode [2022-07-13 19:55:09,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:55:09,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:55:09,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:55:09,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:55:09,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,344 INFO L137 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-07-13 19:55:10,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:55:10,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:55:10,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:55:10,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:55:10,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:55:10,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:55:10,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:55:10,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:55:10,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (1/1) ... [2022-07-13 19:55:10,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:55:10,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:10,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:55:10,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:55:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:55:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:55:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:55:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:55:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:55:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:55:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:55:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:55:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:55:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:55:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:55:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:55:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:55:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:55:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:55:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:55:11,150 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:55:11,152 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:55:16,969 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:55:17,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:55:17,001 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 19:55:17,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:55:17 BoogieIcfgContainer [2022-07-13 19:55:17,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:55:17,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:55:17,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:55:17,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:55:17,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:55:07" (1/3) ... [2022-07-13 19:55:17,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb850a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:55:17, skipping insertion in model container [2022-07-13 19:55:17,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:55:09" (2/3) ... [2022-07-13 19:55:17,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb850a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:55:17, skipping insertion in model container [2022-07-13 19:55:17,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:55:17" (3/3) ... [2022-07-13 19:55:17,011 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-1.c [2022-07-13 19:55:17,023 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:55:17,023 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:55:17,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:55:17,109 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d35be9f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e8248d9 [2022-07-13 19:55:17,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:55:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 19:55:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 19:55:17,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:17,140 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:55:17,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-07-13 19:55:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:17,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003579581] [2022-07-13 19:55:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:17,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:17,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003579581] [2022-07-13 19:55:17,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003579581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:17,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:17,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:55:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619309172] [2022-07-13 19:55:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:17,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:55:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:17,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:55:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:55:17,473 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:18,467 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-07-13 19:55:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:55:18,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 19:55:18,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:18,497 INFO L225 Difference]: With dead ends: 4802 [2022-07-13 19:55:18,497 INFO L226 Difference]: Without dead ends: 2427 [2022-07-13 19:55:18,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:55:18,512 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4428 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16676 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:18,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 16676 Invalid, 642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 19:55:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-07-13 19:55:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-07-13 19:55:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-13 19:55:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-07-13 19:55:18,661 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-07-13 19:55:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:18,662 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-07-13 19:55:18,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-07-13 19:55:18,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 19:55:18,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:18,671 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:55:18,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:55:18,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-07-13 19:55:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:18,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146607561] [2022-07-13 19:55:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:18,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:18,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:18,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146607561] [2022-07-13 19:55:18,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146607561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:18,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:18,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:55:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514360698] [2022-07-13 19:55:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:55:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:55:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:55:18,808 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:19,631 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-07-13 19:55:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:55:19,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 19:55:19,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:19,647 INFO L225 Difference]: With dead ends: 2807 [2022-07-13 19:55:19,648 INFO L226 Difference]: Without dead ends: 2574 [2022-07-13 19:55:19,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:55:19,653 INFO L413 NwaCegarLoop]: 4246 mSDtfsCounter, 4351 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:19,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 20673 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:55:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-07-13 19:55:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-07-13 19:55:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-13 19:55:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-07-13 19:55:19,728 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-07-13 19:55:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:19,729 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-07-13 19:55:19,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-07-13 19:55:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 19:55:19,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:19,731 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:55:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:55:19,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-07-13 19:55:19,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:19,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296165782] [2022-07-13 19:55:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:19,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:19,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:19,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296165782] [2022-07-13 19:55:19,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296165782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:19,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:19,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:55:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262333903] [2022-07-13 19:55:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:19,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:55:19,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:55:19,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:55:19,824 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:20,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:20,648 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-07-13 19:55:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:55:20,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 19:55:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:20,662 INFO L225 Difference]: With dead ends: 3193 [2022-07-13 19:55:20,662 INFO L226 Difference]: Without dead ends: 2851 [2022-07-13 19:55:20,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:55:20,665 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4383 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 20418 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:20,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4392 Valid, 20418 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:55:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-07-13 19:55:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-07-13 19:55:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-13 19:55:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-07-13 19:55:20,731 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-07-13 19:55:20,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:20,732 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-07-13 19:55:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-07-13 19:55:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 19:55:20,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:20,734 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:55:20,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:55:20,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:20,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-07-13 19:55:20,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:20,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588828528] [2022-07-13 19:55:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:20,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:20,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588828528] [2022-07-13 19:55:20,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588828528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:20,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:20,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:55:20,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713238479] [2022-07-13 19:55:20,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:20,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:55:20,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:55:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:55:20,809 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:21,706 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-07-13 19:55:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:55:21,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 19:55:21,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:21,724 INFO L225 Difference]: With dead ends: 4037 [2022-07-13 19:55:21,725 INFO L226 Difference]: Without dead ends: 3476 [2022-07-13 19:55:21,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:55:21,740 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4357 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:21,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 20671 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:55:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-07-13 19:55:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-07-13 19:55:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-13 19:55:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-07-13 19:55:21,841 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-07-13 19:55:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:21,842 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-07-13 19:55:21,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-07-13 19:55:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 19:55:21,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:21,844 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:55:21,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:55:21,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-07-13 19:55:21,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:21,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80376085] [2022-07-13 19:55:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:21,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:21,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80376085] [2022-07-13 19:55:21,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80376085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:21,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:21,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:55:21,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692510216] [2022-07-13 19:55:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:55:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:55:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:55:21,967 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:22,783 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-07-13 19:55:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:55:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 19:55:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:22,802 INFO L225 Difference]: With dead ends: 5435 [2022-07-13 19:55:22,803 INFO L226 Difference]: Without dead ends: 4462 [2022-07-13 19:55:22,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:55:22,808 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4362 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20643 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:22,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20643 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:55:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-07-13 19:55:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-07-13 19:55:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-13 19:55:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-07-13 19:55:22,935 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-07-13 19:55:22,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:22,936 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-07-13 19:55:22,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-07-13 19:55:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 19:55:22,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:22,939 INFO L195 NwaCegarLoop]: 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] [2022-07-13 19:55:22,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:55:22,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-07-13 19:55:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:22,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073584990] [2022-07-13 19:55:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:22,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:23,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:23,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073584990] [2022-07-13 19:55:23,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073584990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:23,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:23,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:55:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106160397] [2022-07-13 19:55:23,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:55:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:55:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:55:23,017 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:23,790 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-07-13 19:55:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:55:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 19:55:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:23,818 INFO L225 Difference]: With dead ends: 7278 [2022-07-13 19:55:23,818 INFO L226 Difference]: Without dead ends: 5469 [2022-07-13 19:55:23,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 19:55:23,827 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 4485 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:23,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 16542 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:55:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-07-13 19:55:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-07-13 19:55:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-13 19:55:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-07-13 19:55:24,001 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-07-13 19:55:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:24,001 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-07-13 19:55:24,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:55:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-07-13 19:55:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 19:55:24,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:24,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:24,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:55:24,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:24,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-07-13 19:55:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:24,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106383172] [2022-07-13 19:55:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:24,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:55:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:55:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 19:55:24,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:24,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106383172] [2022-07-13 19:55:24,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106383172] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674663444] [2022-07-13 19:55:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:24,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:24,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:24,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:24,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 19:55:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:24,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:55:24,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 19:55:24,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:24,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674663444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:24,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:24,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 19:55:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66448002] [2022-07-13 19:55:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:24,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:24,319 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:55:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:24,497 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-07-13 19:55:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-07-13 19:55:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:24,529 INFO L225 Difference]: With dead ends: 10239 [2022-07-13 19:55:24,529 INFO L226 Difference]: Without dead ends: 7489 [2022-07-13 19:55:24,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:24,540 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:24,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:24,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-07-13 19:55:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-07-13 19:55:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-13 19:55:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-07-13 19:55:24,864 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-07-13 19:55:24,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:24,864 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-07-13 19:55:24,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:55:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-07-13 19:55:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 19:55:24,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:24,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:24,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 19:55:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:25,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-07-13 19:55:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720012806] [2022-07-13 19:55:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:55:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:55:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 19:55:25,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:25,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720012806] [2022-07-13 19:55:25,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720012806] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:25,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313238931] [2022-07-13 19:55:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:25,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:25,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:25,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 19:55:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:25,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:55:25,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 19:55:25,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:25,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313238931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:25,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:25,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:25,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427654511] [2022-07-13 19:55:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:25,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:25,333 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 19:55:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:25,732 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-07-13 19:55:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:25,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-13 19:55:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:25,788 INFO L225 Difference]: With dead ends: 17751 [2022-07-13 19:55:25,788 INFO L226 Difference]: Without dead ends: 12449 [2022-07-13 19:55:25,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:25,811 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:25,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-07-13 19:55:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-07-13 19:55:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-13 19:55:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-07-13 19:55:26,359 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-07-13 19:55:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:26,360 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-07-13 19:55:26,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 19:55:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-07-13 19:55:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 19:55:26,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:26,390 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:26,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 19:55:26,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 19:55:26,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-07-13 19:55:26,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:26,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334370418] [2022-07-13 19:55:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:26,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:55:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:55:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 19:55:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 19:55:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:26,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334370418] [2022-07-13 19:55:26,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334370418] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:26,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084378912] [2022-07-13 19:55:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:26,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:26,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:26,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:26,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 19:55:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:26,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:55:26,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 19:55:26,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:26,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084378912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:26,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:26,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 19:55:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239809318] [2022-07-13 19:55:26,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:26,935 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 19:55:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:27,456 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-07-13 19:55:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:27,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-13 19:55:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:27,538 INFO L225 Difference]: With dead ends: 32641 [2022-07-13 19:55:27,538 INFO L226 Difference]: Without dead ends: 22329 [2022-07-13 19:55:27,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:27,580 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:27,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-07-13 19:55:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-07-13 19:55:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-13 19:55:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-07-13 19:55:28,330 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-07-13 19:55:28,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:28,331 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-07-13 19:55:28,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 19:55:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-07-13 19:55:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 19:55:28,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:28,388 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:28,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 19:55:28,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:28,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:28,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-07-13 19:55:28,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559806155] [2022-07-13 19:55:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:28,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 19:55:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 19:55:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 19:55:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 19:55:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 19:55:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559806155] [2022-07-13 19:55:28,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559806155] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066715005] [2022-07-13 19:55:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:28,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:28,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:28,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:28,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 19:55:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:28,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:55:28,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 19:55:28,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:28,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066715005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:28,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:28,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:28,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081168665] [2022-07-13 19:55:28,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:28,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:28,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:28,994 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:55:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:29,779 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-07-13 19:55:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:29,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-13 19:55:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:29,877 INFO L225 Difference]: With dead ends: 44457 [2022-07-13 19:55:29,878 INFO L226 Difference]: Without dead ends: 24473 [2022-07-13 19:55:29,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:29,938 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:29,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:29,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-07-13 19:55:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-07-13 19:55:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-13 19:55:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-07-13 19:55:30,892 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-07-13 19:55:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:30,893 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-07-13 19:55:30,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:55:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-07-13 19:55:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 19:55:30,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:30,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:30,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 19:55:31,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:31,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-07-13 19:55:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:31,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583838625] [2022-07-13 19:55:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:31,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 19:55:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 19:55:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 19:55:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 19:55:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 19:55:31,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:31,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583838625] [2022-07-13 19:55:31,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583838625] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:31,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174630062] [2022-07-13 19:55:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:31,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:31,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:31,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:31,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 19:55:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:31,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:55:31,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 19:55:31,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:31,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174630062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:31,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:31,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119680555] [2022-07-13 19:55:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:31,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:31,448 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:55:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:32,374 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-07-13 19:55:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-07-13 19:55:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:32,475 INFO L225 Difference]: With dead ends: 41324 [2022-07-13 19:55:32,475 INFO L226 Difference]: Without dead ends: 26013 [2022-07-13 19:55:32,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:32,520 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:32,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-07-13 19:55:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-07-13 19:55:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-13 19:55:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-07-13 19:55:33,633 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-07-13 19:55:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:33,634 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-07-13 19:55:33,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:55:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-07-13 19:55:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:55:33,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:33,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:33,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 19:55:33,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 19:55:33,897 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-07-13 19:55:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:33,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900945366] [2022-07-13 19:55:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:55:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:55:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 19:55:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:55:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-13 19:55:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900945366] [2022-07-13 19:55:34,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900945366] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:34,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214587194] [2022-07-13 19:55:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:34,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:34,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:34,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:34,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 19:55:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:34,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:55:34,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 19:55:34,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:34,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214587194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:34,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:34,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802486404] [2022-07-13 19:55:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:34,240 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:55:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:35,484 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-07-13 19:55:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:35,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-13 19:55:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:35,656 INFO L225 Difference]: With dead ends: 70245 [2022-07-13 19:55:35,656 INFO L226 Difference]: Without dead ends: 46511 [2022-07-13 19:55:35,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:35,718 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:35,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-07-13 19:55:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-07-13 19:55:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-07-13 19:55:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-07-13 19:55:37,558 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-07-13 19:55:37,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:37,559 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-07-13 19:55:37,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:55:37,559 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-07-13 19:55:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:55:37,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:37,667 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:37,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 19:55:37,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:37,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-07-13 19:55:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:37,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953450389] [2022-07-13 19:55:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:55:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:55:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:55:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:55:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 19:55:37,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:37,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953450389] [2022-07-13 19:55:37,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953450389] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804512879] [2022-07-13 19:55:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:37,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:37,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 19:55:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:38,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:55:38,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 19:55:38,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:38,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804512879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:38,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:38,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:38,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951133408] [2022-07-13 19:55:38,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:38,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:38,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:38,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:38,187 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:55:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:39,665 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-07-13 19:55:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-13 19:55:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:39,774 INFO L225 Difference]: With dead ends: 75161 [2022-07-13 19:55:39,775 INFO L226 Difference]: Without dead ends: 40527 [2022-07-13 19:55:39,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:39,836 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:39,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-07-13 19:55:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-07-13 19:55:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-07-13 19:55:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-07-13 19:55:41,186 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-07-13 19:55:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:41,186 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-07-13 19:55:41,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:55:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-07-13 19:55:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:55:41,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:41,218 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:41,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-13 19:55:41,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:41,432 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-07-13 19:55:41,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:41,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564878726] [2022-07-13 19:55:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:41,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:55:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:55:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:55:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:55:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 19:55:41,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564878726] [2022-07-13 19:55:41,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564878726] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281920365] [2022-07-13 19:55:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:41,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:41,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:41,525 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:41,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 19:55:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:41,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:55:41,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 19:55:41,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:41,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281920365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:41,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:41,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546587689] [2022-07-13 19:55:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:41,672 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:55:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:43,733 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-07-13 19:55:43,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:43,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-13 19:55:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:44,007 INFO L225 Difference]: With dead ends: 82801 [2022-07-13 19:55:44,007 INFO L226 Difference]: Without dead ends: 55005 [2022-07-13 19:55:44,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:44,049 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:44,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states. [2022-07-13 19:55:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55005 to 53491. [2022-07-13 19:55:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53491 states, 45624 states have (on average 1.3054751884972822) internal successors, (59561), 46105 states have internal predecessors, (59561), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8740), 4233 states have call predecessors, (8740), 4265 states have call successors, (8740) [2022-07-13 19:55:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53491 states to 53491 states and 72566 transitions. [2022-07-13 19:55:46,342 INFO L78 Accepts]: Start accepts. Automaton has 53491 states and 72566 transitions. Word has length 160 [2022-07-13 19:55:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:46,342 INFO L495 AbstractCegarLoop]: Abstraction has 53491 states and 72566 transitions. [2022-07-13 19:55:46,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:55:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 53491 states and 72566 transitions. [2022-07-13 19:55:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:55:46,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:46,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:46,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 19:55:46,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 19:55:46,615 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash -392345557, now seen corresponding path program 1 times [2022-07-13 19:55:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:46,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794807388] [2022-07-13 19:55:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:55:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:55:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 19:55:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:55:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-13 19:55:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:46,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794807388] [2022-07-13 19:55:46,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794807388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:46,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:46,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:55:46,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302245606] [2022-07-13 19:55:46,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:46,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:55:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:46,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:55:46,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:55:46,701 INFO L87 Difference]: Start difference. First operand 53491 states and 72566 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 19:55:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:48,925 INFO L93 Difference]: Finished difference Result 102539 states and 136687 transitions. [2022-07-13 19:55:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:55:48,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-13 19:55:48,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:49,063 INFO L225 Difference]: With dead ends: 102539 [2022-07-13 19:55:49,063 INFO L226 Difference]: Without dead ends: 51193 [2022-07-13 19:55:49,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:49,137 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 282 mSDsluCounter, 12001 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16137 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:49,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16137 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 19:55:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51193 states. [2022-07-13 19:55:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51193 to 48475. [2022-07-13 19:55:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48475 states, 41692 states have (on average 1.3054542837954524) internal successors, (54427), 42585 states have internal predecessors, (54427), 3253 states have call successors, (3253), 2472 states have call predecessors, (3253), 3528 states have return successors, (7133), 3449 states have call predecessors, (7133), 3253 states have call successors, (7133) [2022-07-13 19:55:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48475 states to 48475 states and 64813 transitions. [2022-07-13 19:55:51,707 INFO L78 Accepts]: Start accepts. Automaton has 48475 states and 64813 transitions. Word has length 160 [2022-07-13 19:55:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:51,708 INFO L495 AbstractCegarLoop]: Abstraction has 48475 states and 64813 transitions. [2022-07-13 19:55:51,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 19:55:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 48475 states and 64813 transitions. [2022-07-13 19:55:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:55:51,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:51,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:51,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 19:55:51,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash -809968940, now seen corresponding path program 1 times [2022-07-13 19:55:51,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:51,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726240459] [2022-07-13 19:55:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:51,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:55:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:55:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:55:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:55:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 19:55:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:51,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726240459] [2022-07-13 19:55:51,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726240459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:51,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:51,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:55:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967297832] [2022-07-13 19:55:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:51,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:55:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:55:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:55:51,823 INFO L87 Difference]: Start difference. First operand 48475 states and 64813 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 19:55:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:53,556 INFO L93 Difference]: Finished difference Result 86015 states and 113686 transitions. [2022-07-13 19:55:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:55:53,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-13 19:55:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:53,657 INFO L225 Difference]: With dead ends: 86015 [2022-07-13 19:55:53,657 INFO L226 Difference]: Without dead ends: 39677 [2022-07-13 19:55:53,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:53,721 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 282 mSDsluCounter, 12000 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16135 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:53,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16135 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 19:55:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39677 states. [2022-07-13 19:55:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39677 to 37027. [2022-07-13 19:55:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 31990 states have (on average 1.3210690840887778) internal successors, (42261), 32627 states have internal predecessors, (42261), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4967), 2559 states have call predecessors, (4967), 2427 states have call successors, (4967) [2022-07-13 19:55:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 49655 transitions. [2022-07-13 19:55:55,588 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 49655 transitions. Word has length 160 [2022-07-13 19:55:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:55,588 INFO L495 AbstractCegarLoop]: Abstraction has 37027 states and 49655 transitions. [2022-07-13 19:55:55,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 19:55:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 49655 transitions. [2022-07-13 19:55:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 19:55:55,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:55,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:55,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 19:55:55,628 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:55,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1498858591, now seen corresponding path program 1 times [2022-07-13 19:55:55,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:55,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929068638] [2022-07-13 19:55:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 19:55:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 19:55:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:55:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-13 19:55:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 19:55:55,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:55,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929068638] [2022-07-13 19:55:55,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929068638] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:55,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574202637] [2022-07-13 19:55:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:55,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:55,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:55,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 19:55:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:55,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:55:55,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 19:55:55,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:55,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574202637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:55,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:55,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:55,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160490093] [2022-07-13 19:55:55,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:55,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:55,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:55,841 INFO L87 Difference]: Start difference. First operand 37027 states and 49655 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 19:55:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:57,368 INFO L93 Difference]: Finished difference Result 60935 states and 83299 transitions. [2022-07-13 19:55:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:55:57,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-07-13 19:55:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:57,441 INFO L225 Difference]: With dead ends: 60935 [2022-07-13 19:55:57,441 INFO L226 Difference]: Without dead ends: 37197 [2022-07-13 19:55:57,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:57,475 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 130 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 8382 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:57,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 8382 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:55:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37197 states. [2022-07-13 19:55:59,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37197 to 37027. [2022-07-13 19:55:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 31990 states have (on average 1.2994998437011567) internal successors, (41571), 32627 states have internal predecessors, (41571), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4967), 2559 states have call predecessors, (4967), 2427 states have call successors, (4967) [2022-07-13 19:55:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 48965 transitions. [2022-07-13 19:55:59,271 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 48965 transitions. Word has length 162 [2022-07-13 19:55:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:59,272 INFO L495 AbstractCegarLoop]: Abstraction has 37027 states and 48965 transitions. [2022-07-13 19:55:59,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 19:55:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 48965 transitions. [2022-07-13 19:55:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 19:55:59,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:59,313 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:59,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-13 19:55:59,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 19:55:59,513 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1871536255, now seen corresponding path program 1 times [2022-07-13 19:55:59,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:59,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994589809] [2022-07-13 19:55:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:59,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:55:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:55:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:55:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 19:55:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 19:55:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:55:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:55:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-13 19:55:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 19:55:59,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:59,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994589809] [2022-07-13 19:55:59,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994589809] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:55:59,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093807027] [2022-07-13 19:55:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:59,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:55:59,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:55:59,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 19:55:59,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 19:55:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:59,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:55:59,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:55:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 19:55:59,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:55:59,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093807027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:59,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:55:59,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:55:59,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833919486] [2022-07-13 19:55:59,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:59,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:55:59,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:59,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:55:59,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:55:59,753 INFO L87 Difference]: Start difference. First operand 37027 states and 48965 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:56:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:01,048 INFO L93 Difference]: Finished difference Result 64013 states and 85317 transitions. [2022-07-13 19:56:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:56:01,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2022-07-13 19:56:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:01,118 INFO L225 Difference]: With dead ends: 64013 [2022-07-13 19:56:01,118 INFO L226 Difference]: Without dead ends: 31587 [2022-07-13 19:56:01,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:56:01,161 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 4110 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:01,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 4167 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:56:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31587 states.