./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:03:49,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:03:49,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:03:49,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:03:49,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:03:49,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:03:49,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:03:49,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:03:49,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:03:49,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:03:49,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:03:49,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:03:49,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:03:49,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:03:49,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:03:49,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:03:49,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:03:49,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:03:49,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:03:49,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:03:49,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:03:49,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:03:49,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:03:49,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:03:49,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:03:49,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:03:49,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:03:49,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:03:49,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:03:49,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:03:49,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:03:49,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:03:49,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:03:49,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:03:49,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:03:49,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:03:49,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:03:49,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:03:49,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:03:49,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:03:49,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:03:49,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:03:49,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:03:49,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:03:49,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:03:49,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:03:49,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:03:49,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:03:49,777 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:03:49,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:03:49,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:03:49,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:03:49,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:03:49,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:03:49,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:03:49,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:03:49,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:03:49,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:03:49,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:03:49,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:03:49,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:03:49,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:03:49,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:03:49,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:03:49,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:03:49,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:03:49,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:03:49,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:03:49,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:03:49,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:03:49,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:03:49,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2021-11-06 19:03:49,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:03:49,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:03:49,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:03:49,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:03:49,967 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:03:49,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-06 19:03:50,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a9d7372/b0d70bdc15944ad4b1056850bdeabd5c/FLAG850eb7294 [2021-11-06 19:03:50,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:03:50,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-06 19:03:50,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a9d7372/b0d70bdc15944ad4b1056850bdeabd5c/FLAG850eb7294 [2021-11-06 19:03:50,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a9d7372/b0d70bdc15944ad4b1056850bdeabd5c [2021-11-06 19:03:50,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:03:50,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:03:50,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:03:50,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:03:50,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:03:50,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:50" (1/1) ... [2021-11-06 19:03:50,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2636b1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50, skipping insertion in model container [2021-11-06 19:03:50,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:50" (1/1) ... [2021-11-06 19:03:50,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:03:50,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:03:52,871 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-06 19:03:52,873 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-06 19:03:52,873 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-06 19:03:52,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-06 19:03:52,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:03:52,922 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:03:53,185 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-06 19:03:53,186 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-06 19:03:53,187 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-06 19:03:53,187 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-06 19:03:53,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:03:53,350 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:03:53,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53 WrapperNode [2021-11-06 19:03:53,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:03:53,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:03:53,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:03:53,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:03:53,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:53,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:53,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:03:53,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:03:53,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:03:53,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:03:53,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:53,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:53,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:53,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:54,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:54,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:54,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:54,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:03:54,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:03:54,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:03:54,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:03:54,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (1/1) ... [2021-11-06 19:03:54,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:03:54,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:03:54,508 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) [2021-11-06 19:03:54,514 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 [2021-11-06 19:03:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 19:03:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:03:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:03:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:03:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:03:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:03:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:03:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:03:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:03:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:03:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:03:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:03:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:03:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:03:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:03:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:04:04,577 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:04:04,577 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:04:04,578 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:04:04,578 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:04:04,578 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:04:04,579 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:04:04,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:04:04,595 INFO L299 CfgBuilder]: Removed 3504 assume(true) statements. [2021-11-06 19:04:04,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:04 BoogieIcfgContainer [2021-11-06 19:04:04,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:04:04,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:04:04,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:04:04,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:04:04,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:50" (1/3) ... [2021-11-06 19:04:04,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91569ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:04, skipping insertion in model container [2021-11-06 19:04:04,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:53" (2/3) ... [2021-11-06 19:04:04,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91569ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:04, skipping insertion in model container [2021-11-06 19:04:04,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:04" (3/3) ... [2021-11-06 19:04:04,603 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-06 19:04:04,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:04:04,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2021-11-06 19:04:04,644 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:04:04,647 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 [2021-11-06 19:04:04,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-11-06 19:04:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 3325 states, 3276 states have (on average 1.3427960927960927) internal successors, (4399), 3324 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:04,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 19:04:04,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:04,691 INFO L513 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] [2021-11-06 19:04:04,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-06 19:04:04,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:04,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033514982] [2021-11-06 19:04:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:04,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:04:05,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:05,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033514982] [2021-11-06 19:04:05,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033514982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:05,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:05,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:05,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058536541] [2021-11-06 19:04:05,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:05,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:05,161 INFO L87 Difference]: Start difference. First operand has 3325 states, 3276 states have (on average 1.3427960927960927) internal successors, (4399), 3324 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:07,599 INFO L93 Difference]: Finished difference Result 9565 states and 12678 transitions. [2021-11-06 19:04:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:07,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 19:04:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:07,629 INFO L225 Difference]: With dead ends: 9565 [2021-11-06 19:04:07,629 INFO L226 Difference]: Without dead ends: 6084 [2021-11-06 19:04:07,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2021-11-06 19:04:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 6064. [2021-11-06 19:04:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6064 states, 6015 states have (on average 1.286783042394015) internal successors, (7740), 6063 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6064 states to 6064 states and 7740 transitions. [2021-11-06 19:04:07,818 INFO L78 Accepts]: Start accepts. Automaton has 6064 states and 7740 transitions. Word has length 45 [2021-11-06 19:04:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:07,819 INFO L470 AbstractCegarLoop]: Abstraction has 6064 states and 7740 transitions. [2021-11-06 19:04:07,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6064 states and 7740 transitions. [2021-11-06 19:04:07,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 19:04:07,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:07,826 INFO L513 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] [2021-11-06 19:04:07,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:04:07,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1051115891, now seen corresponding path program 1 times [2021-11-06 19:04:07,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:07,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307968049] [2021-11-06 19:04:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:07,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:04:08,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:08,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307968049] [2021-11-06 19:04:08,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307968049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:08,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:08,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:08,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181869790] [2021-11-06 19:04:08,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:08,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:08,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:08,013 INFO L87 Difference]: Start difference. First operand 6064 states and 7740 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:10,446 INFO L93 Difference]: Finished difference Result 16094 states and 20572 transitions. [2021-11-06 19:04:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:10,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-06 19:04:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:10,479 INFO L225 Difference]: With dead ends: 16094 [2021-11-06 19:04:10,480 INFO L226 Difference]: Without dead ends: 10106 [2021-11-06 19:04:10,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10106 states. [2021-11-06 19:04:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10106 to 9534. [2021-11-06 19:04:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9534 states, 9485 states have (on average 1.293621507643648) internal successors, (12270), 9533 states have internal predecessors, (12270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9534 states to 9534 states and 12270 transitions. [2021-11-06 19:04:10,895 INFO L78 Accepts]: Start accepts. Automaton has 9534 states and 12270 transitions. Word has length 48 [2021-11-06 19:04:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:10,895 INFO L470 AbstractCegarLoop]: Abstraction has 9534 states and 12270 transitions. [2021-11-06 19:04:10,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 9534 states and 12270 transitions. [2021-11-06 19:04:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 19:04:10,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:10,899 INFO L513 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] [2021-11-06 19:04:10,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:04:10,904 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1663310419, now seen corresponding path program 1 times [2021-11-06 19:04:10,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:10,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393776065] [2021-11-06 19:04:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:10,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:04:11,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:11,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393776065] [2021-11-06 19:04:11,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393776065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:11,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:11,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:11,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055313768] [2021-11-06 19:04:11,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:11,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:11,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:11,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:11,023 INFO L87 Difference]: Start difference. First operand 9534 states and 12270 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:13,553 INFO L93 Difference]: Finished difference Result 26848 states and 34562 transitions. [2021-11-06 19:04:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:13,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 19:04:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:13,599 INFO L225 Difference]: With dead ends: 26848 [2021-11-06 19:04:13,599 INFO L226 Difference]: Without dead ends: 17390 [2021-11-06 19:04:13,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17390 states. [2021-11-06 19:04:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17390 to 16002. [2021-11-06 19:04:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16002 states, 15953 states have (on average 1.2954303265843414) internal successors, (20666), 16001 states have internal predecessors, (20666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16002 states to 16002 states and 20666 transitions. [2021-11-06 19:04:13,977 INFO L78 Accepts]: Start accepts. Automaton has 16002 states and 20666 transitions. Word has length 51 [2021-11-06 19:04:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:13,977 INFO L470 AbstractCegarLoop]: Abstraction has 16002 states and 20666 transitions. [2021-11-06 19:04:13,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 16002 states and 20666 transitions. [2021-11-06 19:04:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 19:04:13,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:13,980 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:13,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:04:13,981 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-06 19:04:13,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:13,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116122836] [2021-11-06 19:04:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:13,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:04:14,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:14,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116122836] [2021-11-06 19:04:14,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116122836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:14,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:14,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:14,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895708013] [2021-11-06 19:04:14,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:14,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:14,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:14,173 INFO L87 Difference]: Start difference. First operand 16002 states and 20666 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:16,552 INFO L93 Difference]: Finished difference Result 31940 states and 41269 transitions. [2021-11-06 19:04:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:16,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 19:04:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:16,594 INFO L225 Difference]: With dead ends: 31940 [2021-11-06 19:04:16,594 INFO L226 Difference]: Without dead ends: 23810 [2021-11-06 19:04:16,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:16,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23810 states. [2021-11-06 19:04:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23810 to 23790. [2021-11-06 19:04:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23790 states, 23741 states have (on average 1.2959858472684385) internal successors, (30768), 23789 states have internal predecessors, (30768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23790 states to 23790 states and 30768 transitions. [2021-11-06 19:04:17,010 INFO L78 Accepts]: Start accepts. Automaton has 23790 states and 30768 transitions. Word has length 74 [2021-11-06 19:04:17,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:17,012 INFO L470 AbstractCegarLoop]: Abstraction has 23790 states and 30768 transitions. [2021-11-06 19:04:17,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:17,012 INFO L276 IsEmpty]: Start isEmpty. Operand 23790 states and 30768 transitions. [2021-11-06 19:04:17,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 19:04:17,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:17,015 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:17,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:04:17,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:17,016 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-06 19:04:17,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:17,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793802280] [2021-11-06 19:04:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:17,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:04:17,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:17,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793802280] [2021-11-06 19:04:17,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793802280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:17,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:17,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:17,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422466178] [2021-11-06 19:04:17,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:17,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:17,163 INFO L87 Difference]: Start difference. First operand 23790 states and 30768 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:19,675 INFO L93 Difference]: Finished difference Result 47520 states and 61481 transitions. [2021-11-06 19:04:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 19:04:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:19,736 INFO L225 Difference]: With dead ends: 47520 [2021-11-06 19:04:19,736 INFO L226 Difference]: Without dead ends: 31602 [2021-11-06 19:04:19,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31602 states. [2021-11-06 19:04:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31602 to 31561. [2021-11-06 19:04:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31561 states, 31512 states have (on average 1.2964267580604214) internal successors, (40853), 31560 states have internal predecessors, (40853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31561 states to 31561 states and 40853 transitions. [2021-11-06 19:04:20,344 INFO L78 Accepts]: Start accepts. Automaton has 31561 states and 40853 transitions. Word has length 74 [2021-11-06 19:04:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:20,345 INFO L470 AbstractCegarLoop]: Abstraction has 31561 states and 40853 transitions. [2021-11-06 19:04:20,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 31561 states and 40853 transitions. [2021-11-06 19:04:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 19:04:20,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:20,350 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:04:20,351 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-06 19:04:20,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:20,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929982135] [2021-11-06 19:04:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:20,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:20,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:20,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929982135] [2021-11-06 19:04:20,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929982135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:20,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:20,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:20,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332503967] [2021-11-06 19:04:20,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:20,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:20,508 INFO L87 Difference]: Start difference. First operand 31561 states and 40853 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:21,141 INFO L93 Difference]: Finished difference Result 31561 states and 40853 transitions. [2021-11-06 19:04:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 19:04:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:21,203 INFO L225 Difference]: With dead ends: 31561 [2021-11-06 19:04:21,204 INFO L226 Difference]: Without dead ends: 31555 [2021-11-06 19:04:21,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31555 states. [2021-11-06 19:04:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31555 to 31555. [2021-11-06 19:04:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31555 states, 31509 states have (on average 1.2963597702243803) internal successors, (40847), 31554 states have internal predecessors, (40847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31555 states to 31555 states and 40847 transitions. [2021-11-06 19:04:22,047 INFO L78 Accepts]: Start accepts. Automaton has 31555 states and 40847 transitions. Word has length 75 [2021-11-06 19:04:22,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:22,050 INFO L470 AbstractCegarLoop]: Abstraction has 31555 states and 40847 transitions. [2021-11-06 19:04:22,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 31555 states and 40847 transitions. [2021-11-06 19:04:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 19:04:22,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:22,058 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:22,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:04:22,059 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1366046868, now seen corresponding path program 1 times [2021-11-06 19:04:22,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:22,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734417821] [2021-11-06 19:04:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:22,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:22,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:22,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734417821] [2021-11-06 19:04:22,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734417821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:22,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:22,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:22,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646361291] [2021-11-06 19:04:22,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:22,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:22,261 INFO L87 Difference]: Start difference. First operand 31555 states and 40847 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:23,088 INFO L93 Difference]: Finished difference Result 31555 states and 40847 transitions. [2021-11-06 19:04:23,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:23,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 19:04:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:23,181 INFO L225 Difference]: With dead ends: 31555 [2021-11-06 19:04:23,182 INFO L226 Difference]: Without dead ends: 31549 [2021-11-06 19:04:23,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31549 states. [2021-11-06 19:04:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31549 to 31549. [2021-11-06 19:04:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31549 states, 31506 states have (on average 1.2962927696311815) internal successors, (40841), 31548 states have internal predecessors, (40841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31549 states to 31549 states and 40841 transitions. [2021-11-06 19:04:23,932 INFO L78 Accepts]: Start accepts. Automaton has 31549 states and 40841 transitions. Word has length 77 [2021-11-06 19:04:23,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:23,932 INFO L470 AbstractCegarLoop]: Abstraction has 31549 states and 40841 transitions. [2021-11-06 19:04:23,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand 31549 states and 40841 transitions. [2021-11-06 19:04:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 19:04:23,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:23,935 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:23,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:04:23,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1489100207, now seen corresponding path program 1 times [2021-11-06 19:04:23,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:23,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910336315] [2021-11-06 19:04:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:23,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:24,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:24,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910336315] [2021-11-06 19:04:24,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910336315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:24,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:24,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:24,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686116121] [2021-11-06 19:04:24,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:24,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:24,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:24,178 INFO L87 Difference]: Start difference. First operand 31549 states and 40841 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:24,776 INFO L93 Difference]: Finished difference Result 31549 states and 40841 transitions. [2021-11-06 19:04:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:24,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 19:04:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:24,818 INFO L225 Difference]: With dead ends: 31549 [2021-11-06 19:04:24,818 INFO L226 Difference]: Without dead ends: 31543 [2021-11-06 19:04:24,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31543 states. [2021-11-06 19:04:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31543 to 31543. [2021-11-06 19:04:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31543 states, 31503 states have (on average 1.29622575627718) internal successors, (40835), 31542 states have internal predecessors, (40835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:25,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31543 states to 31543 states and 40835 transitions. [2021-11-06 19:04:25,505 INFO L78 Accepts]: Start accepts. Automaton has 31543 states and 40835 transitions. Word has length 79 [2021-11-06 19:04:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:25,506 INFO L470 AbstractCegarLoop]: Abstraction has 31543 states and 40835 transitions. [2021-11-06 19:04:25,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 31543 states and 40835 transitions. [2021-11-06 19:04:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 19:04:25,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:25,509 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:25,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:04:25,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:25,509 INFO L85 PathProgramCache]: Analyzing trace with hash 801337458, now seen corresponding path program 1 times [2021-11-06 19:04:25,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:25,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036057130] [2021-11-06 19:04:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:25,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:25,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:25,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036057130] [2021-11-06 19:04:25,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036057130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:25,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:25,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:25,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440570203] [2021-11-06 19:04:25,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:25,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:25,630 INFO L87 Difference]: Start difference. First operand 31543 states and 40835 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:26,224 INFO L93 Difference]: Finished difference Result 31543 states and 40835 transitions. [2021-11-06 19:04:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:26,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 19:04:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:26,269 INFO L225 Difference]: With dead ends: 31543 [2021-11-06 19:04:26,269 INFO L226 Difference]: Without dead ends: 31537 [2021-11-06 19:04:26,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31537 states. [2021-11-06 19:04:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31537 to 31537. [2021-11-06 19:04:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31537 states, 31500 states have (on average 1.29615873015873) internal successors, (40829), 31536 states have internal predecessors, (40829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31537 states to 31537 states and 40829 transitions. [2021-11-06 19:04:27,160 INFO L78 Accepts]: Start accepts. Automaton has 31537 states and 40829 transitions. Word has length 81 [2021-11-06 19:04:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:27,161 INFO L470 AbstractCegarLoop]: Abstraction has 31537 states and 40829 transitions. [2021-11-06 19:04:27,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 31537 states and 40829 transitions. [2021-11-06 19:04:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 19:04:27,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:27,165 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:27,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:04:27,165 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1286299573, now seen corresponding path program 1 times [2021-11-06 19:04:27,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:27,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384972112] [2021-11-06 19:04:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:27,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:27,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:27,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384972112] [2021-11-06 19:04:27,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384972112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:27,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:27,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:27,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916100862] [2021-11-06 19:04:27,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:27,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:27,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:27,290 INFO L87 Difference]: Start difference. First operand 31537 states and 40829 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:27,979 INFO L93 Difference]: Finished difference Result 31537 states and 40829 transitions. [2021-11-06 19:04:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 19:04:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:28,022 INFO L225 Difference]: With dead ends: 31537 [2021-11-06 19:04:28,022 INFO L226 Difference]: Without dead ends: 31531 [2021-11-06 19:04:28,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2021-11-06 19:04:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 31531. [2021-11-06 19:04:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31531 states, 31497 states have (on average 1.2960916912721847) internal successors, (40823), 31530 states have internal predecessors, (40823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31531 states to 31531 states and 40823 transitions. [2021-11-06 19:04:28,834 INFO L78 Accepts]: Start accepts. Automaton has 31531 states and 40823 transitions. Word has length 83 [2021-11-06 19:04:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:28,834 INFO L470 AbstractCegarLoop]: Abstraction has 31531 states and 40823 transitions. [2021-11-06 19:04:28,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 31531 states and 40823 transitions. [2021-11-06 19:04:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 19:04:28,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:28,838 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:28,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:04:28,839 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash -816542856, now seen corresponding path program 1 times [2021-11-06 19:04:28,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:28,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373734440] [2021-11-06 19:04:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:28,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:28,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:28,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373734440] [2021-11-06 19:04:28,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373734440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:28,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:28,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:28,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646085281] [2021-11-06 19:04:28,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:28,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:28,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:28,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:28,985 INFO L87 Difference]: Start difference. First operand 31531 states and 40823 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:29,740 INFO L93 Difference]: Finished difference Result 31531 states and 40823 transitions. [2021-11-06 19:04:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:29,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 19:04:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:29,792 INFO L225 Difference]: With dead ends: 31531 [2021-11-06 19:04:29,792 INFO L226 Difference]: Without dead ends: 31525 [2021-11-06 19:04:29,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31525 states. [2021-11-06 19:04:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31525 to 31525. [2021-11-06 19:04:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31525 states, 31494 states have (on average 1.2960246396138948) internal successors, (40817), 31524 states have internal predecessors, (40817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31525 states to 31525 states and 40817 transitions. [2021-11-06 19:04:30,614 INFO L78 Accepts]: Start accepts. Automaton has 31525 states and 40817 transitions. Word has length 85 [2021-11-06 19:04:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:30,614 INFO L470 AbstractCegarLoop]: Abstraction has 31525 states and 40817 transitions. [2021-11-06 19:04:30,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 31525 states and 40817 transitions. [2021-11-06 19:04:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 19:04:30,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:30,638 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:30,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:04:30,638 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1281479611, now seen corresponding path program 1 times [2021-11-06 19:04:30,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:30,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761824947] [2021-11-06 19:04:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:30,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:30,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:30,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761824947] [2021-11-06 19:04:30,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761824947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:30,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:30,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:30,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540502908] [2021-11-06 19:04:30,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:30,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:30,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:30,806 INFO L87 Difference]: Start difference. First operand 31525 states and 40817 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:31,737 INFO L93 Difference]: Finished difference Result 31525 states and 40817 transitions. [2021-11-06 19:04:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:31,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 19:04:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:31,829 INFO L225 Difference]: With dead ends: 31525 [2021-11-06 19:04:31,830 INFO L226 Difference]: Without dead ends: 31519 [2021-11-06 19:04:31,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31519 states. [2021-11-06 19:04:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31519 to 31519. [2021-11-06 19:04:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31519 states, 31491 states have (on average 1.2959575751802102) internal successors, (40811), 31518 states have internal predecessors, (40811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31519 states to 31519 states and 40811 transitions. [2021-11-06 19:04:32,882 INFO L78 Accepts]: Start accepts. Automaton has 31519 states and 40811 transitions. Word has length 87 [2021-11-06 19:04:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:32,882 INFO L470 AbstractCegarLoop]: Abstraction has 31519 states and 40811 transitions. [2021-11-06 19:04:32,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 31519 states and 40811 transitions. [2021-11-06 19:04:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 19:04:32,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:32,887 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:32,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:04:32,887 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1153558402, now seen corresponding path program 1 times [2021-11-06 19:04:32,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:32,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752084543] [2021-11-06 19:04:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:32,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:33,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:33,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752084543] [2021-11-06 19:04:33,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752084543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:33,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:33,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:33,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255283698] [2021-11-06 19:04:33,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:33,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:33,025 INFO L87 Difference]: Start difference. First operand 31519 states and 40811 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:33,905 INFO L93 Difference]: Finished difference Result 31519 states and 40811 transitions. [2021-11-06 19:04:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-06 19:04:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:33,967 INFO L225 Difference]: With dead ends: 31519 [2021-11-06 19:04:33,967 INFO L226 Difference]: Without dead ends: 31513 [2021-11-06 19:04:33,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31513 states. [2021-11-06 19:04:35,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31513 to 31513. [2021-11-06 19:04:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31513 states, 31488 states have (on average 1.2958904979674797) internal successors, (40805), 31512 states have internal predecessors, (40805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31513 states to 31513 states and 40805 transitions. [2021-11-06 19:04:35,181 INFO L78 Accepts]: Start accepts. Automaton has 31513 states and 40805 transitions. Word has length 89 [2021-11-06 19:04:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:35,182 INFO L470 AbstractCegarLoop]: Abstraction has 31513 states and 40805 transitions. [2021-11-06 19:04:35,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 31513 states and 40805 transitions. [2021-11-06 19:04:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 19:04:35,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:35,186 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:35,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:04:35,186 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:35,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:35,187 INFO L85 PathProgramCache]: Analyzing trace with hash -467912255, now seen corresponding path program 1 times [2021-11-06 19:04:35,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:35,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490324938] [2021-11-06 19:04:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:35,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:35,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:35,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490324938] [2021-11-06 19:04:35,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490324938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:35,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:35,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:35,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937063614] [2021-11-06 19:04:35,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:35,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:35,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:35,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:35,311 INFO L87 Difference]: Start difference. First operand 31513 states and 40805 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:36,226 INFO L93 Difference]: Finished difference Result 31513 states and 40805 transitions. [2021-11-06 19:04:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:36,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-06 19:04:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:36,290 INFO L225 Difference]: With dead ends: 31513 [2021-11-06 19:04:36,290 INFO L226 Difference]: Without dead ends: 31507 [2021-11-06 19:04:36,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31507 states. [2021-11-06 19:04:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31507 to 31507. [2021-11-06 19:04:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31507 states, 31485 states have (on average 1.29582340797205) internal successors, (40799), 31506 states have internal predecessors, (40799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31507 states to 31507 states and 40799 transitions. [2021-11-06 19:04:37,512 INFO L78 Accepts]: Start accepts. Automaton has 31507 states and 40799 transitions. Word has length 91 [2021-11-06 19:04:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:37,513 INFO L470 AbstractCegarLoop]: Abstraction has 31507 states and 40799 transitions. [2021-11-06 19:04:37,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31507 states and 40799 transitions. [2021-11-06 19:04:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 19:04:37,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:37,517 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:37,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 19:04:37,517 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1308039044, now seen corresponding path program 1 times [2021-11-06 19:04:37,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:37,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838404866] [2021-11-06 19:04:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:37,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:37,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:37,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838404866] [2021-11-06 19:04:37,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838404866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:37,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:37,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:37,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117520190] [2021-11-06 19:04:37,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:37,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:37,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:37,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:37,660 INFO L87 Difference]: Start difference. First operand 31507 states and 40799 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:38,687 INFO L93 Difference]: Finished difference Result 31507 states and 40799 transitions. [2021-11-06 19:04:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:38,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 19:04:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:38,741 INFO L225 Difference]: With dead ends: 31507 [2021-11-06 19:04:38,741 INFO L226 Difference]: Without dead ends: 31501 [2021-11-06 19:04:38,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31501 states. [2021-11-06 19:04:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31501 to 31501. [2021-11-06 19:04:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31501 states, 31482 states have (on average 1.2957563051902674) internal successors, (40793), 31500 states have internal predecessors, (40793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31501 states to 31501 states and 40793 transitions. [2021-11-06 19:04:39,957 INFO L78 Accepts]: Start accepts. Automaton has 31501 states and 40793 transitions. Word has length 93 [2021-11-06 19:04:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:39,957 INFO L470 AbstractCegarLoop]: Abstraction has 31501 states and 40793 transitions. [2021-11-06 19:04:39,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 31501 states and 40793 transitions. [2021-11-06 19:04:39,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 19:04:39,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:39,962 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:39,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 19:04:39,963 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:39,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:39,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1399746105, now seen corresponding path program 1 times [2021-11-06 19:04:39,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:39,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720287956] [2021-11-06 19:04:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:39,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:40,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:40,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720287956] [2021-11-06 19:04:40,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720287956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:40,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:40,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:40,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639128134] [2021-11-06 19:04:40,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:40,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:40,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:40,095 INFO L87 Difference]: Start difference. First operand 31501 states and 40793 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:41,111 INFO L93 Difference]: Finished difference Result 31501 states and 40793 transitions. [2021-11-06 19:04:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:41,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-06 19:04:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:41,160 INFO L225 Difference]: With dead ends: 31501 [2021-11-06 19:04:41,161 INFO L226 Difference]: Without dead ends: 31495 [2021-11-06 19:04:41,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31495 states. [2021-11-06 19:04:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31495 to 31495. [2021-11-06 19:04:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31495 states, 31479 states have (on average 1.295689189618476) internal successors, (40787), 31494 states have internal predecessors, (40787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31495 states to 31495 states and 40787 transitions. [2021-11-06 19:04:42,298 INFO L78 Accepts]: Start accepts. Automaton has 31495 states and 40787 transitions. Word has length 95 [2021-11-06 19:04:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:42,298 INFO L470 AbstractCegarLoop]: Abstraction has 31495 states and 40787 transitions. [2021-11-06 19:04:42,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 31495 states and 40787 transitions. [2021-11-06 19:04:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 19:04:42,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:42,302 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:42,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 19:04:42,303 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 19:04:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash -831092598, now seen corresponding path program 1 times [2021-11-06 19:04:42,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:42,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506567936] [2021-11-06 19:04:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:42,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:42,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:42,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506567936] [2021-11-06 19:04:42,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506567936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:42,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:42,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:42,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420710888] [2021-11-06 19:04:42,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:42,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:42,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:42,418 INFO L87 Difference]: Start difference. First operand 31495 states and 40787 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:43,313 INFO L93 Difference]: Finished difference Result 31495 states and 40787 transitions. [2021-11-06 19:04:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:43,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 19:04:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:43,357 INFO L225 Difference]: With dead ends: 31495 [2021-11-06 19:04:43,358 INFO L226 Difference]: Without dead ends: 31489 [2021-11-06 19:04:43,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31489 states.