./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-wireless-cw1200-cw1200_wlan_spi.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-wireless-cw1200-cw1200_wlan_spi.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 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:07:34,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:07:34,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:07:34,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:07:34,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:07:34,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:07:34,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:07:34,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:07:34,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:07:34,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:07:34,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:07:34,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:07:34,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:07:34,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:07:34,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:07:34,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:07:34,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:07:34,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:07:34,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:07:34,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:07:34,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:07:34,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:07:34,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:07:34,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:07:34,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:07:34,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:07:34,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:07:34,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:07:34,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:07:34,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:07:34,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:07:34,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:07:34,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:07:34,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:07:34,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:07:34,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:07:34,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:07:34,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:07:34,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:07:34,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:07:34,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:07:34,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:07:34,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:07:34,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:07:34,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:07:34,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:07:34,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:07:34,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:07:34,659 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:07:34,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:07:34,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:07:34,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:07:34,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:07:34,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:07:34,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:07:34,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:07:34,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:07:34,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:07:34,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:07:34,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:07:34,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:07:34,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:07:34,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:07:34,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:07:34,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:07:34,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:07:34,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:07:34,663 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:07:34,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:07:34,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:07:34,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:07:34,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 [2021-11-06 19:07:34,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:07:34,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:07:34,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:07:34,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:07:34,906 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:07:34,907 INFO L432 ainManager$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-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-06 19:07:34,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62932f56/3c20b5a07d3248c29d3a9bef46ac9d74/FLAGb64105f77 [2021-11-06 19:07:35,639 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:07:35,639 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-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-06 19:07:35,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62932f56/3c20b5a07d3248c29d3a9bef46ac9d74/FLAGb64105f77 [2021-11-06 19:07:35,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62932f56/3c20b5a07d3248c29d3a9bef46ac9d74 [2021-11-06 19:07:35,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:07:35,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:07:35,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:07:35,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:07:35,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:07:35,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:35" (1/1) ... [2021-11-06 19:07:35,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdfef25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35, skipping insertion in model container [2021-11-06 19:07:35,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:35" (1/1) ... [2021-11-06 19:07:35,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:07:35,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:07:37,573 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-06 19:07:37,577 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-06 19:07:37,582 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-06 19:07:37,584 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-06 19:07:37,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:07:37,605 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:07:37,916 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-06 19:07:37,917 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-06 19:07:37,918 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-06 19:07:37,918 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-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-06 19:07:37,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:07:37,997 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:07:37,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37 WrapperNode [2021-11-06 19:07:37,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:07:37,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:07:37,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:07:37,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:07:38,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:38,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:38,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:07:38,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:07:38,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:07:38,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:07:38,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:38,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:38,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:38,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:39,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:39,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:39,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:39,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:07:39,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:07:39,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:07:39,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:07:39,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (1/1) ... [2021-11-06 19:07:39,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:07:39,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:07:39,728 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 19:07:39,735 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 19:07:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 19:07:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:07:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:07:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:07:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:07:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:07:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:07:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:07:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:07:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 19:07:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:07:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:07:39,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:07:53,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-06 19:07:53,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:07:53,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:07:53,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:07:53,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:07:53,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-06 19:07:53,693 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:07:53,693 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-06 19:07:53,693 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 19:07:53,694 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:07:53,694 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:07:53,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:07:53,737 INFO L299 CfgBuilder]: Removed 7501 assume(true) statements. [2021-11-06 19:07:53,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:53 BoogieIcfgContainer [2021-11-06 19:07:53,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:07:53,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:07:53,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:07:53,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:07:53,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:07:35" (1/3) ... [2021-11-06 19:07:53,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f152f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:53, skipping insertion in model container [2021-11-06 19:07:53,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:37" (2/3) ... [2021-11-06 19:07:53,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f152f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:53, skipping insertion in model container [2021-11-06 19:07:53,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:53" (3/3) ... [2021-11-06 19:07:53,748 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-06 19:07:53,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:07:53,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-06 19:07:53,809 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:07:53,815 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 19:07:53,816 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-06 19:07:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 6316 states, 6262 states have (on average 1.2884062599808368) internal successors, (8068), 6315 states have internal predecessors, (8068), 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 19:07:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 19:07:53,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:53,911 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, 1] [2021-11-06 19:07:53,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:07:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2083674736, now seen corresponding path program 1 times [2021-11-06 19:07:53,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:53,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273389115] [2021-11-06 19:07:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:53,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:54,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:54,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273389115] [2021-11-06 19:07:54,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273389115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:54,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:54,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:54,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320904991] [2021-11-06 19:07:54,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:54,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:54,304 INFO L87 Difference]: Start difference. First operand has 6316 states, 6262 states have (on average 1.2884062599808368) internal successors, (8068), 6315 states have internal predecessors, (8068), 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 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:07:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:54,919 INFO L93 Difference]: Finished difference Result 18180 states and 23170 transitions. [2021-11-06 19:07:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:54,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-06 19:07:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:54,978 INFO L225 Difference]: With dead ends: 18180 [2021-11-06 19:07:54,978 INFO L226 Difference]: Without dead ends: 11160 [2021-11-06 19:07:55,004 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 19:07:55,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11160 states. [2021-11-06 19:07:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11160 to 11124. [2021-11-06 19:07:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11124 states, 11070 states have (on average 1.2100271002710028) internal successors, (13395), 11123 states have internal predecessors, (13395), 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 19:07:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11124 states to 11124 states and 13395 transitions. [2021-11-06 19:07:55,342 INFO L78 Accepts]: Start accepts. Automaton has 11124 states and 13395 transitions. Word has length 52 [2021-11-06 19:07:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:55,343 INFO L470 AbstractCegarLoop]: Abstraction has 11124 states and 13395 transitions. [2021-11-06 19:07:55,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:07:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 11124 states and 13395 transitions. [2021-11-06 19:07:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 19:07:55,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:55,345 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, 1] [2021-11-06 19:07:55,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:07:55,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:07:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2046403671, now seen corresponding path program 1 times [2021-11-06 19:07:55,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:55,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251488282] [2021-11-06 19:07:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:55,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:55,499 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 19:07:55,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:55,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251488282] [2021-11-06 19:07:55,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251488282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:55,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:55,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:55,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762573630] [2021-11-06 19:07:55,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:55,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:55,503 INFO L87 Difference]: Start difference. First operand 11124 states and 13395 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:07:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:55,995 INFO L93 Difference]: Finished difference Result 24504 states and 29527 transitions. [2021-11-06 19:07:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:55,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-06 19:07:55,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:56,039 INFO L225 Difference]: With dead ends: 24504 [2021-11-06 19:07:56,039 INFO L226 Difference]: Without dead ends: 13472 [2021-11-06 19:07:56,062 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 19:07:56,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13472 states. [2021-11-06 19:07:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13472 to 13276. [2021-11-06 19:07:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13276 states, 13222 states have (on average 1.2098018454091666) internal successors, (15996), 13275 states have internal predecessors, (15996), 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 19:07:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 15996 transitions. [2021-11-06 19:07:56,427 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 15996 transitions. Word has length 52 [2021-11-06 19:07:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:56,428 INFO L470 AbstractCegarLoop]: Abstraction has 13276 states and 15996 transitions. [2021-11-06 19:07:56,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:07:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 15996 transitions. [2021-11-06 19:07:56,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 19:07:56,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:56,438 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:56,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:07:56,438 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:07:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash -99697309, now seen corresponding path program 1 times [2021-11-06 19:07:56,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:56,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128517266] [2021-11-06 19:07:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:56,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:56,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:56,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128517266] [2021-11-06 19:07:56,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128517266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:56,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:56,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:56,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601785058] [2021-11-06 19:07:56,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:56,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:56,562 INFO L87 Difference]: Start difference. First operand 13276 states and 15996 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:07:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:57,735 INFO L93 Difference]: Finished difference Result 37938 states and 45826 transitions. [2021-11-06 19:07:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:57,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-06 19:07:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:57,829 INFO L225 Difference]: With dead ends: 37938 [2021-11-06 19:07:57,829 INFO L226 Difference]: Without dead ends: 24754 [2021-11-06 19:07:57,863 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 19:07:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24754 states. [2021-11-06 19:07:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24754 to 23274. [2021-11-06 19:07:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23274 states, 23220 states have (on average 1.2207579672695952) internal successors, (28346), 23273 states have internal predecessors, (28346), 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 19:07:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23274 states to 23274 states and 28346 transitions. [2021-11-06 19:07:58,619 INFO L78 Accepts]: Start accepts. Automaton has 23274 states and 28346 transitions. Word has length 59 [2021-11-06 19:07:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:58,620 INFO L470 AbstractCegarLoop]: Abstraction has 23274 states and 28346 transitions. [2021-11-06 19:07:58,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:07:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23274 states and 28346 transitions. [2021-11-06 19:07:58,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 19:07:58,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:58,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:58,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:07:58,622 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:07:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1953021455, now seen corresponding path program 1 times [2021-11-06 19:07:58,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:58,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758519147] [2021-11-06 19:07:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:58,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:58,699 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 19:07:58,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:58,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758519147] [2021-11-06 19:07:58,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758519147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:58,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:58,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:58,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016956420] [2021-11-06 19:07:58,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:58,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:58,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:58,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:58,704 INFO L87 Difference]: Start difference. First operand 23274 states and 28346 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:07:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:59,368 INFO L93 Difference]: Finished difference Result 56909 states and 69351 transitions. [2021-11-06 19:07:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:59,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-06 19:07:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:59,453 INFO L225 Difference]: With dead ends: 56909 [2021-11-06 19:07:59,453 INFO L226 Difference]: Without dead ends: 33727 [2021-11-06 19:07:59,491 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 19:07:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33727 states. [2021-11-06 19:08:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33727 to 33519. [2021-11-06 19:08:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33519 states, 33465 states have (on average 1.2213656058568654) internal successors, (40873), 33518 states have internal predecessors, (40873), 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 19:08:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33519 states to 33519 states and 40873 transitions. [2021-11-06 19:08:00,311 INFO L78 Accepts]: Start accepts. Automaton has 33519 states and 40873 transitions. Word has length 60 [2021-11-06 19:08:00,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:00,312 INFO L470 AbstractCegarLoop]: Abstraction has 33519 states and 40873 transitions. [2021-11-06 19:08:00,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:08:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 33519 states and 40873 transitions. [2021-11-06 19:08:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 19:08:00,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:00,314 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:08:00,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:08:00,314 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:08:00,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1648861447, now seen corresponding path program 1 times [2021-11-06 19:08:00,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:00,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540097736] [2021-11-06 19:08:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:00,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:08:00,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:00,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540097736] [2021-11-06 19:08:00,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540097736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:00,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:00,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:00,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562251725] [2021-11-06 19:08:00,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:08:00,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:00,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:08:00,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:00,372 INFO L87 Difference]: Start difference. First operand 33519 states and 40873 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) 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 19:08:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:01,462 INFO L93 Difference]: Finished difference Result 95449 states and 116481 transitions. [2021-11-06 19:08:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:08:01,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) 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 68 [2021-11-06 19:08:01,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:01,661 INFO L225 Difference]: With dead ends: 95449 [2021-11-06 19:08:01,662 INFO L226 Difference]: Without dead ends: 62022 [2021-11-06 19:08:01,734 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 19:08:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62022 states. [2021-11-06 19:08:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62022 to 61778. [2021-11-06 19:08:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61778 states, 61724 states have (on average 1.2212105501911736) internal successors, (75378), 61777 states have internal predecessors, (75378), 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 19:08:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61778 states to 61778 states and 75378 transitions. [2021-11-06 19:08:03,196 INFO L78 Accepts]: Start accepts. Automaton has 61778 states and 75378 transitions. Word has length 68 [2021-11-06 19:08:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:03,199 INFO L470 AbstractCegarLoop]: Abstraction has 61778 states and 75378 transitions. [2021-11-06 19:08:03,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) 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 19:08:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 61778 states and 75378 transitions. [2021-11-06 19:08:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 19:08:03,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:03,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:08:03,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:08:03,202 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:08:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1288308795, now seen corresponding path program 1 times [2021-11-06 19:08:03,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:03,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134986463] [2021-11-06 19:08:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:03,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:03,272 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 19:08:03,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:03,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134986463] [2021-11-06 19:08:03,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134986463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:03,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:03,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:03,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220888053] [2021-11-06 19:08:03,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:08:03,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:08:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:03,275 INFO L87 Difference]: Start difference. First operand 61778 states and 75378 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:08:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:05,341 INFO L93 Difference]: Finished difference Result 144674 states and 176637 transitions. [2021-11-06 19:08:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:08:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:08:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:05,582 INFO L225 Difference]: With dead ends: 144674 [2021-11-06 19:08:05,582 INFO L226 Difference]: Without dead ends: 102858 [2021-11-06 19:08:05,664 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 19:08:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102858 states. [2021-11-06 19:08:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102858 to 102822. [2021-11-06 19:08:07,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102822 states, 102768 states have (on average 1.2212167211583371) internal successors, (125502), 102821 states have internal predecessors, (125502), 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 19:08:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102822 states to 102822 states and 125502 transitions. [2021-11-06 19:08:08,139 INFO L78 Accepts]: Start accepts. Automaton has 102822 states and 125502 transitions. Word has length 83 [2021-11-06 19:08:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:08,140 INFO L470 AbstractCegarLoop]: Abstraction has 102822 states and 125502 transitions. [2021-11-06 19:08:08,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:08:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand 102822 states and 125502 transitions. [2021-11-06 19:08:08,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 19:08:08,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:08,142 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:08:08,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:08:08,143 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:08:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2072749914, now seen corresponding path program 1 times [2021-11-06 19:08:08,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:08,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657564657] [2021-11-06 19:08:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:08,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:08:08,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:08,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657564657] [2021-11-06 19:08:08,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657564657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:08,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:08,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:08,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27767232] [2021-11-06 19:08:08,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:08:08,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:08:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:08,218 INFO L87 Difference]: Start difference. First operand 102822 states and 125502 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 19:08:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:10,800 INFO L93 Difference]: Finished difference Result 226730 states and 276725 transitions. [2021-11-06 19:08:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:08:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 19:08:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:11,206 INFO L225 Difference]: With dead ends: 226730 [2021-11-06 19:08:11,207 INFO L226 Difference]: Without dead ends: 143870 [2021-11-06 19:08:11,341 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 19:08:11,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143870 states. [2021-11-06 19:08:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143870 to 143834. [2021-11-06 19:08:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143834 states, 143780 states have (on average 1.2209347614410906) internal successors, (175546), 143833 states have internal predecessors, (175546), 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 19:08:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143834 states to 143834 states and 175546 transitions. [2021-11-06 19:08:14,721 INFO L78 Accepts]: Start accepts. Automaton has 143834 states and 175546 transitions. Word has length 85 [2021-11-06 19:08:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:14,721 INFO L470 AbstractCegarLoop]: Abstraction has 143834 states and 175546 transitions. [2021-11-06 19:08:14,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 19:08:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 143834 states and 175546 transitions. [2021-11-06 19:08:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 19:08:14,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:14,724 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:08:14,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:08:14,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:08:14,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:14,724 INFO L85 PathProgramCache]: Analyzing trace with hash 78605208, now seen corresponding path program 1 times [2021-11-06 19:08:14,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:14,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013855377] [2021-11-06 19:08:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:14,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:14,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:14,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013855377] [2021-11-06 19:08:14,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013855377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:14,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:14,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:14,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110381444] [2021-11-06 19:08:14,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:14,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:14,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:14,860 INFO L87 Difference]: Start difference. First operand 143834 states and 175546 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 19:08:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:17,314 INFO L93 Difference]: Finished difference Result 143834 states and 175546 transitions. [2021-11-06 19:08:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:17,314 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 85 [2021-11-06 19:08:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:17,653 INFO L225 Difference]: With dead ends: 143834 [2021-11-06 19:08:17,653 INFO L226 Difference]: Without dead ends: 143828 [2021-11-06 19:08:17,705 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 19:08:17,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143828 states. [2021-11-06 19:08:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143828 to 143828. [2021-11-06 19:08:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143828 states, 143777 states have (on average 1.2209185057415304) internal successors, (175540), 143827 states have internal predecessors, (175540), 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 19:08:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143828 states to 143828 states and 175540 transitions. [2021-11-06 19:08:21,396 INFO L78 Accepts]: Start accepts. Automaton has 143828 states and 175540 transitions. Word has length 85 [2021-11-06 19:08:21,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:21,397 INFO L470 AbstractCegarLoop]: Abstraction has 143828 states and 175540 transitions. [2021-11-06 19:08:21,397 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 19:08:21,397 INFO L276 IsEmpty]: Start isEmpty. Operand 143828 states and 175540 transitions. [2021-11-06 19:08:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 19:08:21,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:21,400 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:08:21,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:08:21,400 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 19:08:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1769656293, now seen corresponding path program 1 times [2021-11-06 19:08:21,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:21,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312570210] [2021-11-06 19:08:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:21,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:21,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:21,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312570210] [2021-11-06 19:08:21,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312570210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:21,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:21,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:21,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488001413] [2021-11-06 19:08:21,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:21,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:21,512 INFO L87 Difference]: Start difference. First operand 143828 states and 175540 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 19:08:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:23,881 INFO L93 Difference]: Finished difference Result 143828 states and 175540 transitions. [2021-11-06 19:08:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:23,881 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 87 [2021-11-06 19:08:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:24,259 INFO L225 Difference]: With dead ends: 143828 [2021-11-06 19:08:24,259 INFO L226 Difference]: Without dead ends: 143822 [2021-11-06 19:08:24,319 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 19:08:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143822 states.