./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.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 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:12:31,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:12:31,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:12:31,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:12:31,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:12:31,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:12:31,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:12:31,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:12:31,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:12:31,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:12:31,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:12:31,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:12:31,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:12:31,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:12:31,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:12:31,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:12:31,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:12:31,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:12:31,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:12:31,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:12:31,634 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:12:31,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:12:31,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:12:31,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:12:31,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:12:31,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:12:31,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:12:31,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:12:31,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:12:31,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:12:31,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:12:31,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:12:31,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:12:31,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:12:31,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:12:31,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:12:31,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:12:31,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:12:31,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:12:31,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:12:31,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:12:31,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:12:31,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:12:31,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:12:31,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:12:31,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:12:31,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:12:31,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:12:31,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:12:31,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:12:31,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:12:31,677 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:12:31,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:12:31,678 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:12:31,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:12:31,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:12:31,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:12:31,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:12:31,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:12:31,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:12:31,679 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:12:31,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:12:31,679 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:12:31,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:12:31,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:12:31,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:12:31,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:12:31,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:12:31,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:12:31,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:12:31,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:12:31,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:12:31,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:12:31,681 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:12:31,681 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:12:31,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:12:31,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af [2022-07-12 08:12:31,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:12:31,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:12:31,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:12:31,917 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:12:31,918 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:12:31,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2022-07-12 08:12:31,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68eab988/1f2fe0cc25a744e8aa500a4927d72ccc/FLAGe494fd7fb [2022-07-12 08:12:32,591 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:12:32,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2022-07-12 08:12:32,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68eab988/1f2fe0cc25a744e8aa500a4927d72ccc/FLAGe494fd7fb [2022-07-12 08:12:32,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68eab988/1f2fe0cc25a744e8aa500a4927d72ccc [2022-07-12 08:12:32,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:12:32,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:12:32,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:12:32,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:12:32,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:12:32,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:12:32" (1/1) ... [2022-07-12 08:12:32,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2fbbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:32, skipping insertion in model container [2022-07-12 08:12:32,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:12:32" (1/1) ... [2022-07-12 08:12:32,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:12:32,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:12:34,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[378560,378573] [2022-07-12 08:12:34,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[383339,383352] [2022-07-12 08:12:34,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:12:34,245 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:12:34,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[378560,378573] [2022-07-12 08:12:34,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[383339,383352] [2022-07-12 08:12:34,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:12:34,924 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:12:34,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34 WrapperNode [2022-07-12 08:12:34,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:12:34,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:12:34,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:12:34,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:12:34,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,214 INFO L137 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-07-12 08:12:35,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:12:35,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:12:35,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:12:35,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:12:35,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:12:35,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:12:35,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:12:35,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:12:35,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:35,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:12:35,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:12:35,612 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) [2022-07-12 08:12:35,614 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 [2022-07-12 08:12:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:12:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:12:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:12:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:12:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:12:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:12:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:12:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:12:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:12:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:12:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:12:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:12:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:12:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:12:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:12:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:12:35,841 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:12:35,843 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:12:41,011 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:12:41,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:12:41,036 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-12 08:12:41,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:12:41 BoogieIcfgContainer [2022-07-12 08:12:41,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:12:41,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:12:41,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:12:41,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:12:41,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:12:32" (1/3) ... [2022-07-12 08:12:41,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350e8365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:12:41, skipping insertion in model container [2022-07-12 08:12:41,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34" (2/3) ... [2022-07-12 08:12:41,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350e8365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:12:41, skipping insertion in model container [2022-07-12 08:12:41,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:12:41" (3/3) ... [2022-07-12 08:12:41,053 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-2.c [2022-07-12 08:12:41,064 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:12:41,065 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:12:41,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:12:41,138 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@ce716f7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c826f1c [2022-07-12 08:12:41,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:12:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-12 08:12:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:41,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:41,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:41,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:41,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-07-12 08:12:41,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:41,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251846070] [2022-07-12 08:12:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:41,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:41,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:41,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:41,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251846070] [2022-07-12 08:12:41,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251846070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:41,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:41,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:12:41,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939419837] [2022-07-12 08:12:41,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:41,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:12:41,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:12:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:12:41,540 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-12 08:12:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:42,542 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-07-12 08:12:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:12:42,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:42,572 INFO L225 Difference]: With dead ends: 4899 [2022-07-12 08:12:42,573 INFO L226 Difference]: Without dead ends: 2500 [2022-07-12 08:12:42,582 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 [2022-07-12 08:12:42,586 INFO L413 NwaCegarLoop]: 4287 mSDtfsCounter, 4543 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:42,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 16755 Invalid, 782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:12:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-07-12 08:12:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-07-12 08:12:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-12 08:12:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-07-12 08:12:42,719 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-07-12 08:12:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:42,720 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-07-12 08:12:42,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-12 08:12:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-07-12 08:12:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:42,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:42,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:42,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:12:42,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:42,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-07-12 08:12:42,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:42,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963706727] [2022-07-12 08:12:42,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:42,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:42,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:42,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963706727] [2022-07-12 08:12:42,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963706727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:42,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:42,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:42,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513378290] [2022-07-12 08:12:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:42,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:42,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:42,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:42,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:42,844 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:43,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:43,769 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-07-12 08:12:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:12:43,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:43,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:43,780 INFO L225 Difference]: With dead ends: 2969 [2022-07-12 08:12:43,781 INFO L226 Difference]: Without dead ends: 2686 [2022-07-12 08:12:43,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:12:43,786 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 4469 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 20875 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:43,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 20875 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:12:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-07-12 08:12:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-07-12 08:12:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-12 08:12:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-07-12 08:12:43,861 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-07-12 08:12:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:43,861 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-07-12 08:12:43,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-07-12 08:12:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:43,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:43,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:43,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:12:43,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:43,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-07-12 08:12:43,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:43,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91593245] [2022-07-12 08:12:43,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:43,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:43,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:43,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91593245] [2022-07-12 08:12:43,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91593245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:43,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:43,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:43,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523948504] [2022-07-12 08:12:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:43,994 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:44,932 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-07-12 08:12:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:12:44,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:44,949 INFO L225 Difference]: With dead ends: 3451 [2022-07-12 08:12:44,949 INFO L226 Difference]: Without dead ends: 3035 [2022-07-12 08:12:44,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:12:44,959 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4466 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:44,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 20867 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:12:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-12 08:12:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-07-12 08:12:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-12 08:12:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-07-12 08:12:45,035 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-07-12 08:12:45,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:45,037 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-07-12 08:12:45,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-07-12 08:12:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:45,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:45,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:45,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:12:45,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:45,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-07-12 08:12:45,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:45,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917069325] [2022-07-12 08:12:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:45,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:45,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917069325] [2022-07-12 08:12:45,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917069325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:45,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:45,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526551517] [2022-07-12 08:12:45,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:45,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:45,124 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:45,987 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-07-12 08:12:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:12:45,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:46,004 INFO L225 Difference]: With dead ends: 4382 [2022-07-12 08:12:46,004 INFO L226 Difference]: Without dead ends: 3699 [2022-07-12 08:12:46,008 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 [2022-07-12 08:12:46,009 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 4462 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 20863 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:46,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4472 Valid, 20863 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:12:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-07-12 08:12:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-07-12 08:12:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-12 08:12:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-07-12 08:12:46,093 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-07-12 08:12:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:46,094 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-07-12 08:12:46,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-07-12 08:12:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:46,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:46,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:46,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:12:46,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-07-12 08:12:46,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:46,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963018285] [2022-07-12 08:12:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:46,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:46,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:46,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963018285] [2022-07-12 08:12:46,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963018285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:46,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:46,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:46,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746436925] [2022-07-12 08:12:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:46,194 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:47,078 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-07-12 08:12:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:12:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:47,100 INFO L225 Difference]: With dead ends: 6651 [2022-07-12 08:12:47,100 INFO L226 Difference]: Without dead ends: 5433 [2022-07-12 08:12:47,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:12:47,107 INFO L413 NwaCegarLoop]: 4302 mSDtfsCounter, 4593 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 20849 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:47,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 20849 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:12:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-07-12 08:12:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-07-12 08:12:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-07-12 08:12:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-07-12 08:12:47,247 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-07-12 08:12:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:47,247 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-07-12 08:12:47,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-07-12 08:12:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:47,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:47,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:47,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:12:47,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-07-12 08:12:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:47,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62882307] [2022-07-12 08:12:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:47,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:47,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62882307] [2022-07-12 08:12:47,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62882307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:47,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:47,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297924211] [2022-07-12 08:12:47,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:47,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:47,308 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:48,385 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-07-12 08:12:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:12:48,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:48,424 INFO L225 Difference]: With dead ends: 10516 [2022-07-12 08:12:48,425 INFO L226 Difference]: Without dead ends: 8247 [2022-07-12 08:12:48,435 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 [2022-07-12 08:12:48,438 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 4479 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4488 SdHoareTripleChecker+Valid, 20883 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:48,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4488 Valid, 20883 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:12:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-07-12 08:12:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-07-12 08:12:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-07-12 08:12:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-07-12 08:12:48,687 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-07-12 08:12:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:48,688 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-07-12 08:12:48,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-07-12 08:12:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:48,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:48,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:12:48,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-07-12 08:12:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:48,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038296012] [2022-07-12 08:12:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:48,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:48,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:48,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038296012] [2022-07-12 08:12:48,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038296012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:48,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:48,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:48,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915522130] [2022-07-12 08:12:48,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:48,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:48,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:48,781 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:49,862 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-07-12 08:12:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:12:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:49,915 INFO L225 Difference]: With dead ends: 17230 [2022-07-12 08:12:49,915 INFO L226 Difference]: Without dead ends: 12950 [2022-07-12 08:12:49,930 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 [2022-07-12 08:12:49,933 INFO L413 NwaCegarLoop]: 4289 mSDtfsCounter, 4470 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:49,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 20836 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:12:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-07-12 08:12:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-07-12 08:12:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-07-12 08:12:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-07-12 08:12:50,318 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-07-12 08:12:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:50,320 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-07-12 08:12:50,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-12 08:12:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-07-12 08:12:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:12:50,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:50,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:12:50,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:12:50,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:50,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-07-12 08:12:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424609130] [2022-07-12 08:12:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:50,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424609130] [2022-07-12 08:12:50,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424609130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:50,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:50,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:12:50,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572862417] [2022-07-12 08:12:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:12:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:12:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:12:50,403 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-12 08:12:51,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:51,817 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-07-12 08:12:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:12:51,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-12 08:12:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:51,879 INFO L225 Difference]: With dead ends: 25979 [2022-07-12 08:12:51,879 INFO L226 Difference]: Without dead ends: 17584 [2022-07-12 08:12:51,917 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 [2022-07-12 08:12:51,918 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 4630 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 16716 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:51,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 16716 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:12:51,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-07-12 08:12:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-07-12 08:12:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-07-12 08:12:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-07-12 08:12:52,559 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-07-12 08:12:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:52,560 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-07-12 08:12:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-12 08:12:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-07-12 08:12:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 08:12:52,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:52,587 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, 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] [2022-07-12 08:12:52,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:12:52,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-07-12 08:12:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:52,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229546124] [2022-07-12 08:12:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:52,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:12:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:12:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:12:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:12:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:52,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229546124] [2022-07-12 08:12:52,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229546124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:12:52,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716475940] [2022-07-12 08:12:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:52,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:12:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:12:52,677 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) [2022-07-12 08:12:52,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:12:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:12:52,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:12:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 08:12:52,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:12:52,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716475940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:52,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:12:52,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:12:52,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781922116] [2022-07-12 08:12:52,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:52,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:12:52,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:12:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:12:52,864 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-07-12 08:12:53,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:53,591 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-07-12 08:12:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:12:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 128 [2022-07-12 08:12:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:53,681 INFO L225 Difference]: With dead ends: 39550 [2022-07-12 08:12:53,682 INFO L226 Difference]: Without dead ends: 26962 [2022-07-12 08:12:53,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:12:53,729 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 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 [2022-07-12 08:12:53,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:12:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-07-12 08:12:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-07-12 08:12:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-07-12 08:12:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-07-12 08:12:54,671 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-07-12 08:12:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:54,672 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-07-12 08:12:54,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-07-12 08:12:54,672 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-07-12 08:12:54,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 08:12:54,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:54,722 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, 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] [2022-07-12 08:12:54,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:12:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:12:54,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-07-12 08:12:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:54,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992743717] [2022-07-12 08:12:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:54,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:12:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:12:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:12:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:12:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992743717] [2022-07-12 08:12:55,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992743717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:12:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412128161] [2022-07-12 08:12:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:55,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:12:55,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:12:55,062 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) [2022-07-12 08:12:55,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 08:12:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:55,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:12:55,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:12:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 08:12:55,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:12:55,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412128161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:55,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:12:55,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:12:55,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164870246] [2022-07-12 08:12:55,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:55,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:12:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:12:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:12:55,233 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2022-07-12 08:12:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:56,652 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-07-12 08:12:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:12:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 128 [2022-07-12 08:12:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:56,865 INFO L225 Difference]: With dead ends: 75333 [2022-07-12 08:12:56,865 INFO L226 Difference]: Without dead ends: 50702 [2022-07-12 08:12:56,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:12:56,945 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 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 [2022-07-12 08:12:56,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:12:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-07-12 08:12:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-07-12 08:12:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-07-12 08:12:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-07-12 08:12:58,942 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-07-12 08:12:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:58,943 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-07-12 08:12:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2022-07-12 08:12:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-07-12 08:12:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 08:12:59,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:59,048 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, 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] [2022-07-12 08:12:59,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 08:12:59,263 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,SelfDestructingSolverStorable9 [2022-07-12 08:12:59,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-07-12 08:12:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:59,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583755336] [2022-07-12 08:12:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:12:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:12:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:12:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:12:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:12:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:12:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:12:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:12:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:59,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583755336] [2022-07-12 08:12:59,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583755336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:12:59,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145295242] [2022-07-12 08:12:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:59,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:12:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:12:59,364 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) [2022-07-12 08:12:59,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 08:12:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:59,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:12:59,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:12:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 08:12:59,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:12:59,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145295242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:59,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:12:59,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:12:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064844388] [2022-07-12 08:12:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:59,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:12:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:12:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:12:59,488 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-07-12 08:13:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:02,696 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-07-12 08:13:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:13:02,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 128 [2022-07-12 08:13:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:03,132 INFO L225 Difference]: With dead ends: 144685 [2022-07-12 08:13:03,133 INFO L226 Difference]: Without dead ends: 96511 [2022-07-12 08:13:03,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:03,264 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 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 [2022-07-12 08:13:03,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:13:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-07-12 08:13:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-07-12 08:13:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-07-12 08:13:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-07-12 08:13:07,729 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-07-12 08:13:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:07,730 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-07-12 08:13:07,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-07-12 08:13:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-07-12 08:13:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 08:13:08,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:08,002 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, 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, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:08,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 08:13:08,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:13:08,216 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-07-12 08:13:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:08,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921334754] [2022-07-12 08:13:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:13:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:13:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:13:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:13:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:13:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:13:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 08:13:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:13:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 08:13:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 08:13:08,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:08,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921334754] [2022-07-12 08:13:08,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921334754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:13:08,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486629342] [2022-07-12 08:13:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:08,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:13:08,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:13:08,321 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) [2022-07-12 08:13:08,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 08:13:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:13:08,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:13:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 08:13:08,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:13:08,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486629342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:08,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:13:08,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:13:08,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077966746] [2022-07-12 08:13:08,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:08,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:13:08,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:13:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:08,565 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2022-07-12 08:13:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:14,954 INFO L93 Difference]: Finished difference Result 280463 states and 429619 transitions. [2022-07-12 08:13:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:13:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 166 [2022-07-12 08:13:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:15,937 INFO L225 Difference]: With dead ends: 280463 [2022-07-12 08:13:15,937 INFO L226 Difference]: Without dead ends: 186091 [2022-07-12 08:13:16,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:16,143 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4086 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4399 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 [2022-07-12 08:13:16,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:13:16,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186091 states. [2022-07-12 08:13:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186091 to 184521. [2022-07-12 08:13:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184521 states, 159460 states have (on average 1.465803336259877) internal successors, (233737), 161263 states have internal predecessors, (233737), 14405 states have call successors, (14405), 9118 states have call predecessors, (14405), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-07-12 08:13:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184521 states to 184521 states and 280416 transitions. [2022-07-12 08:13:24,186 INFO L78 Accepts]: Start accepts. Automaton has 184521 states and 280416 transitions. Word has length 166 [2022-07-12 08:13:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:24,187 INFO L495 AbstractCegarLoop]: Abstraction has 184521 states and 280416 transitions. [2022-07-12 08:13:24,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2022-07-12 08:13:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand 184521 states and 280416 transitions. [2022-07-12 08:13:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 08:13:24,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:24,637 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, 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, 1, 1, 1] [2022-07-12 08:13:24,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 08:13:24,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:13:24,848 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 399987983, now seen corresponding path program 1 times [2022-07-12 08:13:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:24,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967219950] [2022-07-12 08:13:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:13:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:13:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:13:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:13:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 08:13:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 08:13:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:13:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 08:13:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:13:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 08:13:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 08:13:24,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967219950] [2022-07-12 08:13:24,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967219950] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:13:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444430016] [2022-07-12 08:13:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:24,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:13:24,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:13:24,956 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) [2022-07-12 08:13:24,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 08:13:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:25,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:13:25,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:13:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 08:13:25,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:13:25,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444430016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:25,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:13:25,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:13:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456721307] [2022-07-12 08:13:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:25,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:13:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:13:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:25,172 INFO L87 Difference]: Start difference. First operand 184521 states and 280416 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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)