./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_label49+token_ring.15.cil.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 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:44:20,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:44:20,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:44:20,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:44:20,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:44:20,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:44:20,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:44:20,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:44:20,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:44:20,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:44:20,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:44:20,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:44:20,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:44:20,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:44:20,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:44:20,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:44:20,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:44:20,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:44:20,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:44:20,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:44:20,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:44:20,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:44:20,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:44:20,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:44:20,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:44:20,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:44:20,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:44:20,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:44:20,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:44:20,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:44:20,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:44:20,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:44:20,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:44:20,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:44:20,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:44:20,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:44:20,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:44:20,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:44:20,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:44:20,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:44:20,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:44:20,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:44:20,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:44:20,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:44:20,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:44:20,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:44:20,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:44:20,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:44:20,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:44:20,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:44:20,598 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:44:20,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:44:20,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:44:20,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:44:20,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:44:20,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:44:20,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:44:20,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:44:20,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:44:20,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:44:20,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:44:20,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:44:20,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:44:20,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:44:20,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:44:20,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:44:20,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:20,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:44:20,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:44:20,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:44:20,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:44:20,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:44:20,601 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:44:20,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:44:20,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:44:20,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:44:20,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 [2021-12-22 12:44:20,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:44:20,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:44:20,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:44:20,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:44:20,826 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:44:20,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2021-12-22 12:44:20,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc902655/831260aabeb74fa3968bbcebba5ff967/FLAG8bae69278 [2021-12-22 12:44:21,655 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:44:21,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2021-12-22 12:44:21,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc902655/831260aabeb74fa3968bbcebba5ff967/FLAG8bae69278 [2021-12-22 12:44:22,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc902655/831260aabeb74fa3968bbcebba5ff967 [2021-12-22 12:44:22,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:44:22,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:44:22,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:22,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:44:22,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:44:22,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:22" (1/1) ... [2021-12-22 12:44:22,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3b80d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:22, skipping insertion in model container [2021-12-22 12:44:22,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:22" (1/1) ... [2021-12-22 12:44:22,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:44:22,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:44:23,533 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_label49+token_ring.15.cil.c[380593,380606] [2021-12-22 12:44:23,562 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_label49+token_ring.15.cil.c[383339,383352] [2021-12-22 12:44:23,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:23,790 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:44:24,348 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_label49+token_ring.15.cil.c[380593,380606] [2021-12-22 12:44:24,352 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_label49+token_ring.15.cil.c[383339,383352] [2021-12-22 12:44:24,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:24,434 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:44:24,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24 WrapperNode [2021-12-22 12:44:24,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:24,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:24,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:44:24,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:44:24,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:24,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:24,779 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2021-12-22 12:44:24,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:24,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:44:24,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:44:24,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:44:24,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:24,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:24,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:24,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:25,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:25,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:25,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:25,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:44:25,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:44:25,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:44:25,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:44:25,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (1/1) ... [2021-12-22 12:44:25,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:44:25,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:44:25,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:44:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:44:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:44:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:44:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:44:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:44:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:44:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:44:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-22 12:44:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-22 12:44:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:44:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:44:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:44:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:44:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:44:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:44:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:44:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:44:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:44:25,526 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:44:25,527 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:44:30,352 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:44:30,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:44:30,374 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-22 12:44:30,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:30 BoogieIcfgContainer [2021-12-22 12:44:30,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:44:30,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:44:30,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:44:30,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:44:30,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:44:22" (1/3) ... [2021-12-22 12:44:30,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54958744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:30, skipping insertion in model container [2021-12-22 12:44:30,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:24" (2/3) ... [2021-12-22 12:44:30,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54958744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:30, skipping insertion in model container [2021-12-22 12:44:30,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:30" (3/3) ... [2021-12-22 12:44:30,383 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.15.cil.c [2021-12-22 12:44:30,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:44:30,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:44:30,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:44:30,427 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:44:30,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:44:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-22 12:44:30,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:30,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:30,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:30,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:30,480 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-12-22 12:44:30,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:30,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152751377] [2021-12-22 12:44:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:30,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:30,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:30,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152751377] [2021-12-22 12:44:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152751377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:30,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:30,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:44:30,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52206487] [2021-12-22 12:44:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:30,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:44:30,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:30,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:44:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:44:30,977 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:32,407 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2021-12-22 12:44:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:44:32,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:32,447 INFO L225 Difference]: With dead ends: 5336 [2021-12-22 12:44:32,447 INFO L226 Difference]: Without dead ends: 2681 [2021-12-22 12:44:32,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:44:32,461 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 1117 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:32,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 17259 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:44:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-22 12:44:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-22 12:44:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-22 12:44:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2021-12-22 12:44:32,578 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2021-12-22 12:44:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:32,578 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2021-12-22 12:44:32,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2021-12-22 12:44:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:32,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:32,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:32,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:44:32,583 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2021-12-22 12:44:32,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:32,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485893187] [2021-12-22 12:44:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:32,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:32,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:32,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:32,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:32,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485893187] [2021-12-22 12:44:32,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485893187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:32,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:32,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:44:32,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934390597] [2021-12-22 12:44:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:32,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:44:32,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:44:32,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:44:32,743 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:33,937 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2021-12-22 12:44:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:44:33,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:33,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:33,950 INFO L225 Difference]: With dead ends: 3071 [2021-12-22 12:44:33,951 INFO L226 Difference]: Without dead ends: 2681 [2021-12-22 12:44:33,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:44:33,956 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 1103 mSDsluCounter, 12319 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 16986 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:33,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 16986 Invalid, 820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:44:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-22 12:44:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-22 12:44:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-22 12:44:34,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2021-12-22 12:44:34,116 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2021-12-22 12:44:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:34,116 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2021-12-22 12:44:34,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:34,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2021-12-22 12:44:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:34,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:34,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:34,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:44:34,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:34,121 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2021-12-22 12:44:34,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:34,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309172883] [2021-12-22 12:44:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:34,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:34,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:34,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309172883] [2021-12-22 12:44:34,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309172883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:34,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:34,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:44:34,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526909829] [2021-12-22 12:44:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:34,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:44:34,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:44:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:44:34,265 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:36,780 INFO L93 Difference]: Finished difference Result 3626 states and 6383 transitions. [2021-12-22 12:44:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:44:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:36,792 INFO L225 Difference]: With dead ends: 3626 [2021-12-22 12:44:36,792 INFO L226 Difference]: Without dead ends: 3240 [2021-12-22 12:44:36,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:44:36,795 INFO L933 BasicCegarLoop]: 4723 mSDtfsCounter, 5636 mSDsluCounter, 12966 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 17689 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:36,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5656 Valid, 17689 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 12:44:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-12-22 12:44:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2933. [2021-12-22 12:44:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2867 states have (on average 1.795256365538891) internal successors, (5147), 2871 states have internal predecessors, (5147), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-22 12:44:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 5250 transitions. [2021-12-22 12:44:36,862 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 5250 transitions. Word has length 190 [2021-12-22 12:44:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:36,862 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 5250 transitions. [2021-12-22 12:44:36,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 5250 transitions. [2021-12-22 12:44:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:36,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:36,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:36,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:44:36,865 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1773060918, now seen corresponding path program 1 times [2021-12-22 12:44:36,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:36,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740439663] [2021-12-22 12:44:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:36,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:36,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:36,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:37,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:37,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740439663] [2021-12-22 12:44:37,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740439663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:37,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:37,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:37,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990883460] [2021-12-22 12:44:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:37,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:37,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:37,012 INFO L87 Difference]: Start difference. First operand 2933 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:40,015 INFO L93 Difference]: Finished difference Result 4610 states and 7978 transitions. [2021-12-22 12:44:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:40,028 INFO L225 Difference]: With dead ends: 4610 [2021-12-22 12:44:40,028 INFO L226 Difference]: Without dead ends: 3819 [2021-12-22 12:44:40,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:40,031 INFO L933 BasicCegarLoop]: 5052 mSDtfsCounter, 5672 mSDsluCounter, 17946 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5692 SdHoareTripleChecker+Valid, 22998 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:40,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5692 Valid, 22998 Invalid, 3382 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:44:40,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2021-12-22 12:44:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3309. [2021-12-22 12:44:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3214 states have (on average 1.7710018668326073) internal successors, (5692), 3219 states have internal predecessors, (5692), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-22 12:44:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 5841 transitions. [2021-12-22 12:44:40,132 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 5841 transitions. Word has length 190 [2021-12-22 12:44:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:40,133 INFO L470 AbstractCegarLoop]: Abstraction has 3309 states and 5841 transitions. [2021-12-22 12:44:40,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 5841 transitions. [2021-12-22 12:44:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:40,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:40,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:40,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:44:40,136 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:40,136 INFO L85 PathProgramCache]: Analyzing trace with hash -150189512, now seen corresponding path program 1 times [2021-12-22 12:44:40,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:40,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080368596] [2021-12-22 12:44:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:40,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:40,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:40,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080368596] [2021-12-22 12:44:40,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080368596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:40,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:40,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:40,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519339563] [2021-12-22 12:44:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:40,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:40,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:40,270 INFO L87 Difference]: Start difference. First operand 3309 states and 5841 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:43,510 INFO L93 Difference]: Finished difference Result 6060 states and 10309 transitions. [2021-12-22 12:44:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:43,531 INFO L225 Difference]: With dead ends: 6060 [2021-12-22 12:44:43,531 INFO L226 Difference]: Without dead ends: 4893 [2021-12-22 12:44:43,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:43,538 INFO L933 BasicCegarLoop]: 5040 mSDtfsCounter, 5666 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3289 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5686 SdHoareTripleChecker+Valid, 22982 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:43,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5686 Valid, 22982 Invalid, 3377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3289 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 12:44:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2021-12-22 12:44:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4065. [2021-12-22 12:44:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 3912 states have (on average 1.7354294478527608) internal successors, (6789), 3919 states have internal predecessors, (6789), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-22 12:44:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 7034 transitions. [2021-12-22 12:44:43,693 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 7034 transitions. Word has length 190 [2021-12-22 12:44:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:43,693 INFO L470 AbstractCegarLoop]: Abstraction has 4065 states and 7034 transitions. [2021-12-22 12:44:43,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:43,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 7034 transitions. [2021-12-22 12:44:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:43,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:43,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:43,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:44:43,697 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash 348367290, now seen corresponding path program 1 times [2021-12-22 12:44:43,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:43,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982748395] [2021-12-22 12:44:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:43,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:43,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:43,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982748395] [2021-12-22 12:44:43,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982748395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:43,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:43,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:43,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698553736] [2021-12-22 12:44:43,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:43,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:43,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:43,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:43,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:43,833 INFO L87 Difference]: Start difference. First operand 4065 states and 7034 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:47,116 INFO L93 Difference]: Finished difference Result 8854 states and 14770 transitions. [2021-12-22 12:44:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:47,165 INFO L225 Difference]: With dead ends: 8854 [2021-12-22 12:44:47,165 INFO L226 Difference]: Without dead ends: 6931 [2021-12-22 12:44:47,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:47,175 INFO L933 BasicCegarLoop]: 5035 mSDtfsCounter, 5665 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5685 SdHoareTripleChecker+Valid, 22977 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:47,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5685 Valid, 22977 Invalid, 3369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 12:44:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2021-12-22 12:44:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 5578. [2021-12-22 12:44:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5309 states have (on average 1.6920323978150311) internal successors, (8983), 5320 states have internal predecessors, (8983), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-22 12:44:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 9426 transitions. [2021-12-22 12:44:47,440 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 9426 transitions. Word has length 190 [2021-12-22 12:44:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:47,440 INFO L470 AbstractCegarLoop]: Abstraction has 5578 states and 9426 transitions. [2021-12-22 12:44:47,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 9426 transitions. [2021-12-22 12:44:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:47,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:47,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:47,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:44:47,444 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash 918639096, now seen corresponding path program 1 times [2021-12-22 12:44:47,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:47,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185986702] [2021-12-22 12:44:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:47,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:47,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:47,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185986702] [2021-12-22 12:44:47,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185986702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:47,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:47,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:47,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575907344] [2021-12-22 12:44:47,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:47,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:47,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:47,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:47,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:47,579 INFO L87 Difference]: Start difference. First operand 5578 states and 9426 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:50,871 INFO L93 Difference]: Finished difference Result 14441 states and 23708 transitions. [2021-12-22 12:44:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:50,909 INFO L225 Difference]: With dead ends: 14441 [2021-12-22 12:44:50,909 INFO L226 Difference]: Without dead ends: 11005 [2021-12-22 12:44:50,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:50,924 INFO L933 BasicCegarLoop]: 5030 mSDtfsCounter, 5664 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5684 SdHoareTripleChecker+Valid, 22972 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:50,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5684 Valid, 22972 Invalid, 3361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:44:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11005 states. [2021-12-22 12:44:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11005 to 8611. [2021-12-22 12:44:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8611 states, 8110 states have (on average 1.6499383477188656) internal successors, (13381), 8129 states have internal predecessors, (13381), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-22 12:44:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8611 states to 8611 states and 14238 transitions. [2021-12-22 12:44:51,384 INFO L78 Accepts]: Start accepts. Automaton has 8611 states and 14238 transitions. Word has length 190 [2021-12-22 12:44:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:51,385 INFO L470 AbstractCegarLoop]: Abstraction has 8611 states and 14238 transitions. [2021-12-22 12:44:51,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8611 states and 14238 transitions. [2021-12-22 12:44:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:51,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:51,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:51,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:44:51,390 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1972459014, now seen corresponding path program 1 times [2021-12-22 12:44:51,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:51,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089003300] [2021-12-22 12:44:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:51,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:51,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:51,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:51,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089003300] [2021-12-22 12:44:51,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089003300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:51,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:51,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:51,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826163662] [2021-12-22 12:44:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:51,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:51,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:51,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:51,532 INFO L87 Difference]: Start difference. First operand 8611 states and 14238 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:55,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:55,392 INFO L93 Difference]: Finished difference Result 25616 states and 41646 transitions. [2021-12-22 12:44:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:55,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:55,445 INFO L225 Difference]: With dead ends: 25616 [2021-12-22 12:44:55,445 INFO L226 Difference]: Without dead ends: 19147 [2021-12-22 12:44:55,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:55,468 INFO L933 BasicCegarLoop]: 4758 mSDtfsCounter, 5775 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5795 SdHoareTripleChecker+Valid, 21993 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:55,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5795 Valid, 21993 Invalid, 3031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 12:44:55,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2021-12-22 12:44:56,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 14692. [2021-12-22 12:44:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14692 states, 13727 states have (on average 1.6171778247249946) internal successors, (22199), 13762 states have internal predecessors, (22199), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-22 12:44:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14692 states to 14692 states and 23938 transitions. [2021-12-22 12:44:56,306 INFO L78 Accepts]: Start accepts. Automaton has 14692 states and 23938 transitions. Word has length 190 [2021-12-22 12:44:56,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:56,306 INFO L470 AbstractCegarLoop]: Abstraction has 14692 states and 23938 transitions. [2021-12-22 12:44:56,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 14692 states and 23938 transitions. [2021-12-22 12:44:56,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:44:56,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:56,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:56,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:44:56,313 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:56,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1536510392, now seen corresponding path program 1 times [2021-12-22 12:44:56,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:56,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528732990] [2021-12-22 12:44:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:56,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:44:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:44:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:44:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:44:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:56,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:56,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528732990] [2021-12-22 12:44:56,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528732990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:56,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:56,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:56,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671830171] [2021-12-22 12:44:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:56,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:56,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:56,442 INFO L87 Difference]: Start difference. First operand 14692 states and 23938 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:59,023 INFO L93 Difference]: Finished difference Result 31976 states and 52109 transitions. [2021-12-22 12:44:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:44:59,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:44:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:59,073 INFO L225 Difference]: With dead ends: 31976 [2021-12-22 12:44:59,073 INFO L226 Difference]: Without dead ends: 19426 [2021-12-22 12:44:59,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:44:59,108 INFO L933 BasicCegarLoop]: 4645 mSDtfsCounter, 5350 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5371 SdHoareTripleChecker+Valid, 17321 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:59,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5371 Valid, 17321 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:44:59,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19426 states. [2021-12-22 12:45:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19426 to 14692. [2021-12-22 12:45:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14692 states, 13727 states have (on average 1.6147738034530488) internal successors, (22166), 13762 states have internal predecessors, (22166), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-22 12:45:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14692 states to 14692 states and 23905 transitions. [2021-12-22 12:45:00,140 INFO L78 Accepts]: Start accepts. Automaton has 14692 states and 23905 transitions. Word has length 190 [2021-12-22 12:45:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:45:00,141 INFO L470 AbstractCegarLoop]: Abstraction has 14692 states and 23905 transitions. [2021-12-22 12:45:00,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:45:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 14692 states and 23905 transitions. [2021-12-22 12:45:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:45:00,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:45:00,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:45:00,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:45:00,149 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:45:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:45:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2091075014, now seen corresponding path program 1 times [2021-12-22 12:45:00,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:45:00,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438843916] [2021-12-22 12:45:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:45:00,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:45:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:45:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:45:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:00,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:45:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:45:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:00,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:45:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:45:00,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:45:00,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438843916] [2021-12-22 12:45:00,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438843916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:45:00,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:45:00,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:45:00,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703583210] [2021-12-22 12:45:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:45:00,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:45:00,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:45:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:45:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:45:00,276 INFO L87 Difference]: Start difference. First operand 14692 states and 23905 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:45:05,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:45:05,499 INFO L93 Difference]: Finished difference Result 47933 states and 77484 transitions. [2021-12-22 12:45:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:45:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:45:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:45:05,597 INFO L225 Difference]: With dead ends: 47933 [2021-12-22 12:45:05,598 INFO L226 Difference]: Without dead ends: 35383 [2021-12-22 12:45:05,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:45:05,629 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 5655 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22956 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:45:05,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 22956 Invalid, 3326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 12:45:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35383 states. [2021-12-22 12:45:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35383 to 26918. [2021-12-22 12:45:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26918 states, 25025 states have (on average 1.5924075924075924) internal successors, (39850), 25092 states have internal predecessors, (39850), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2021-12-22 12:45:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26918 states to 26918 states and 43515 transitions. [2021-12-22 12:45:07,427 INFO L78 Accepts]: Start accepts. Automaton has 26918 states and 43515 transitions. Word has length 190 [2021-12-22 12:45:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:45:07,428 INFO L470 AbstractCegarLoop]: Abstraction has 26918 states and 43515 transitions. [2021-12-22 12:45:07,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:45:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 26918 states and 43515 transitions. [2021-12-22 12:45:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:45:07,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:45:07,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:45:07,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:45:07,439 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:45:07,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:45:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash 8663416, now seen corresponding path program 1 times [2021-12-22 12:45:07,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:45:07,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966803212] [2021-12-22 12:45:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:45:07,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:45:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:45:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:45:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:07,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:45:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:45:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:45:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:45:07,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:45:07,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966803212] [2021-12-22 12:45:07,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966803212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:45:07,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:45:07,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:45:07,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239088529] [2021-12-22 12:45:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:45:07,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:45:07,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:45:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:45:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:45:07,561 INFO L87 Difference]: Start difference. First operand 26918 states and 43515 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:45:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:45:15,941 INFO L93 Difference]: Finished difference Result 92637 states and 150036 transitions. [2021-12-22 12:45:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:45:15,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-22 12:45:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:45:16,188 INFO L225 Difference]: With dead ends: 92637 [2021-12-22 12:45:16,188 INFO L226 Difference]: Without dead ends: 67861 [2021-12-22 12:45:16,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:45:16,239 INFO L933 BasicCegarLoop]: 5007 mSDtfsCounter, 5657 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5677 SdHoareTripleChecker+Valid, 22949 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:45:16,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5677 Valid, 22949 Invalid, 3318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 12:45:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67861 states. [2021-12-22 12:45:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67861 to 51431. [2021-12-22 12:45:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51431 states, 47682 states have (on average 1.57938005956126) internal successors, (75308), 47813 states have internal predecessors, (75308), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2021-12-22 12:45:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51431 states to 51431 states and 83311 transitions. [2021-12-22 12:45:19,967 INFO L78 Accepts]: Start accepts. Automaton has 51431 states and 83311 transitions. Word has length 190 [2021-12-22 12:45:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:45:19,967 INFO L470 AbstractCegarLoop]: Abstraction has 51431 states and 83311 transitions. [2021-12-22 12:45:19,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:45:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 51431 states and 83311 transitions. [2021-12-22 12:45:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:45:19,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:45:19,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:45:19,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:45:19,986 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:45:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:45:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash 353491578, now seen corresponding path program 1 times [2021-12-22 12:45:19,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:45:19,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578166784] [2021-12-22 12:45:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:45:19,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:45:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:45:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:45:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:45:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:45:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:45:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:45:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:45:20,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:45:20,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578166784] [2021-12-22 12:45:20,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578166784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:45:20,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:45:20,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:45:20,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103024332] [2021-12-22 12:45:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:45:20,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:45:20,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:45:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:45:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:45:20,105 INFO L87 Difference]: Start difference. First operand 51431 states and 83311 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)