./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-dnet.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-dnet.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 fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:58:49,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:58:49,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:58:49,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:58:49,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:58:49,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:58:49,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:58:49,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:58:49,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:58:49,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:58:49,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:58:49,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:58:49,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:58:49,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:58:49,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:58:49,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:58:49,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:58:49,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:58:49,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:58:49,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:58:49,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:58:49,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:58:49,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:58:49,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:58:49,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:58:49,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:58:49,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:58:49,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:58:49,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:58:49,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:58:49,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:58:49,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:58:49,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:58:49,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:58:49,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:58:49,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:58:49,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:58:49,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:58:49,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:58:49,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:58:49,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:58:49,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:58:49,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:58:49,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:58:49,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:58:49,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:58:49,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:58:49,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:58:49,718 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:58:49,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:58:49,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:58:49,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:58:49,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:58:49,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:58:49,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:58:49,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:58:49,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:58:49,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:58:49,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:58:49,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:58:49,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:58:49,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:58:49,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:58:49,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:58:49,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:58:49,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:58:49,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:58:49,727 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:58:49,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:58:49,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:58:49,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:58:49,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2021-11-06 18:58:49,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:58:50,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:58:50,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:58:50,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:58:50,020 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:58:50,021 INFO L432 ainManager$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-dnet.cil.i [2021-11-06 18:58:50,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e48989f0/22dbf49a603441bca61dba3ffbb16f34/FLAGdae01050d [2021-11-06 18:58:50,816 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:58:50,816 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-dnet.cil.i [2021-11-06 18:58:50,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e48989f0/22dbf49a603441bca61dba3ffbb16f34/FLAGdae01050d [2021-11-06 18:58:51,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e48989f0/22dbf49a603441bca61dba3ffbb16f34 [2021-11-06 18:58:51,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:58:51,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:58:51,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:58:51,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:58:51,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:58:51,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:51,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9853aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51, skipping insertion in model container [2021-11-06 18:58:51,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:51,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:58:51,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:58:53,288 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-dnet.cil.i[305216,305229] [2021-11-06 18:58:53,292 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-dnet.cil.i[305385,305398] [2021-11-06 18:58:53,292 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-dnet.cil.i[305552,305565] [2021-11-06 18:58:53,293 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-dnet.cil.i[305720,305733] [2021-11-06 18:58:53,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:58:53,342 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:58:53,629 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-dnet.cil.i[305216,305229] [2021-11-06 18:58:53,630 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-dnet.cil.i[305385,305398] [2021-11-06 18:58:53,631 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-dnet.cil.i[305552,305565] [2021-11-06 18:58:53,631 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-dnet.cil.i[305720,305733] [2021-11-06 18:58:53,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:58:53,809 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:58:53,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53 WrapperNode [2021-11-06 18:58:53,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:58:53,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:58:53,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:58:53,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:58:53,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:53,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:56,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:58:56,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:58:56,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:58:56,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:58:56,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:56,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:56,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:56,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:57,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:57,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:58,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:58,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:58:58,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:58:58,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:58:58,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:58:58,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (1/1) ... [2021-11-06 18:58:58,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:58:58,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:58:58,572 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 18:58:58,590 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 18:58:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:58:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:58:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:58:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:58:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:58:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:58:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:58:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:58:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:58:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:58:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:58:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:58:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:58:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:58:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:00:09,212 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:00:09,213 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 19:00:09,213 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 19:00:09,213 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-06 19:00:09,214 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:00:09,214 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:00:09,214 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:00:09,217 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:00:09,218 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 19:00:09,218 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:00:09,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:00:09,263 INFO L299 CfgBuilder]: Removed 19368 assume(true) statements. [2021-11-06 19:00:09,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:09 BoogieIcfgContainer [2021-11-06 19:00:09,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:00:09,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:00:09,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:00:09,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:00:09,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:58:51" (1/3) ... [2021-11-06 19:00:09,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fb59b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:09, skipping insertion in model container [2021-11-06 19:00:09,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:53" (2/3) ... [2021-11-06 19:00:09,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fb59b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:09, skipping insertion in model container [2021-11-06 19:00:09,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:09" (3/3) ... [2021-11-06 19:00:09,284 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-06 19:00:09,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:00:09,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-11-06 19:00:09,370 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:00:09,377 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 19:00:09,377 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-11-06 19:00:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 13017 states, 12985 states have (on average 1.2266461301501732) internal successors, (15928), 13016 states have internal predecessors, (15928), 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 19:00:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 19:00:09,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:09,542 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 19:00:09,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-06 19:00:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -481796582, now seen corresponding path program 1 times [2021-11-06 19:00:09,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:09,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016061190] [2021-11-06 19:00:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:09,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:10,454 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 19:00:10,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:10,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016061190] [2021-11-06 19:00:10,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016061190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:10,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:10,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:10,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025508215] [2021-11-06 19:00:10,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:10,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:10,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:10,506 INFO L87 Difference]: Start difference. First operand has 13017 states, 12985 states have (on average 1.2266461301501732) internal successors, (15928), 13016 states have internal predecessors, (15928), 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 19:00:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:13,588 INFO L93 Difference]: Finished difference Result 38703 states and 47341 transitions. [2021-11-06 19:00:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:13,590 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 19:00:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:13,712 INFO L225 Difference]: With dead ends: 38703 [2021-11-06 19:00:13,713 INFO L226 Difference]: Without dead ends: 24229 [2021-11-06 19:00:13,748 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 19:00:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24229 states. [2021-11-06 19:00:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24229 to 24213. [2021-11-06 19:00:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24213 states, 24181 states have (on average 1.1697200281212523) internal successors, (28285), 24212 states have internal predecessors, (28285), 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 19:00:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24213 states to 24213 states and 28285 transitions. [2021-11-06 19:00:14,446 INFO L78 Accepts]: Start accepts. Automaton has 24213 states and 28285 transitions. Word has length 45 [2021-11-06 19:00:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:14,447 INFO L470 AbstractCegarLoop]: Abstraction has 24213 states and 28285 transitions. [2021-11-06 19:00:14,447 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 19:00:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24213 states and 28285 transitions. [2021-11-06 19:00:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 19:00:14,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:14,450 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] [2021-11-06 19:00:14,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:00:14,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-06 19:00:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash -38719139, now seen corresponding path program 1 times [2021-11-06 19:00:14,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:14,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610046657] [2021-11-06 19:00:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:14,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:14,770 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 19:00:14,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:14,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610046657] [2021-11-06 19:00:14,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610046657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:14,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:14,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:14,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813058427] [2021-11-06 19:00:14,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:14,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:14,774 INFO L87 Difference]: Start difference. First operand 24213 states and 28285 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:00:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:18,845 INFO L93 Difference]: Finished difference Result 72105 states and 84271 transitions. [2021-11-06 19:00:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-06 19:00:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:18,998 INFO L225 Difference]: With dead ends: 72105 [2021-11-06 19:00:18,998 INFO L226 Difference]: Without dead ends: 47976 [2021-11-06 19:00:19,073 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 19:00:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47976 states. [2021-11-06 19:00:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47976 to 43994. [2021-11-06 19:00:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43994 states, 43962 states have (on average 1.1756516991947592) internal successors, (51684), 43993 states have internal predecessors, (51684), 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 19:00:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43994 states to 43994 states and 51684 transitions. [2021-11-06 19:00:20,305 INFO L78 Accepts]: Start accepts. Automaton has 43994 states and 51684 transitions. Word has length 46 [2021-11-06 19:00:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:20,305 INFO L470 AbstractCegarLoop]: Abstraction has 43994 states and 51684 transitions. [2021-11-06 19:00:20,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:00:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 43994 states and 51684 transitions. [2021-11-06 19:00:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 19:00:20,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:20,309 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] [2021-11-06 19:00:20,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:00:20,309 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-06 19:00:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1141204786, now seen corresponding path program 1 times [2021-11-06 19:00:20,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:20,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492114801] [2021-11-06 19:00:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:20,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:20,567 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 19:00:20,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:20,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492114801] [2021-11-06 19:00:20,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492114801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:20,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:20,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:20,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305568964] [2021-11-06 19:00:20,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:20,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:20,571 INFO L87 Difference]: Start difference. First operand 43994 states and 51684 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 19:00:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:24,115 INFO L93 Difference]: Finished difference Result 91366 states and 107642 transitions. [2021-11-06 19:00:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:24,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-06 19:00:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:24,296 INFO L225 Difference]: With dead ends: 91366 [2021-11-06 19:00:24,296 INFO L226 Difference]: Without dead ends: 47456 [2021-11-06 19:00:24,379 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 19:00:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47456 states. [2021-11-06 19:00:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47456 to 47314. [2021-11-06 19:00:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47314 states, 47282 states have (on average 1.1801954232054481) internal successors, (55802), 47313 states have internal predecessors, (55802), 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 19:00:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47314 states to 47314 states and 55802 transitions. [2021-11-06 19:00:25,436 INFO L78 Accepts]: Start accepts. Automaton has 47314 states and 55802 transitions. Word has length 50 [2021-11-06 19:00:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:25,436 INFO L470 AbstractCegarLoop]: Abstraction has 47314 states and 55802 transitions. [2021-11-06 19:00:25,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 19:00:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 47314 states and 55802 transitions. [2021-11-06 19:00:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 19:00:25,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:25,439 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 19:00:25,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:00:25,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-06 19:00:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1032539779, now seen corresponding path program 1 times [2021-11-06 19:00:25,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:25,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709135770] [2021-11-06 19:00:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:25,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:25,883 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 19:00:25,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:25,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709135770] [2021-11-06 19:00:25,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709135770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:25,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:25,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:25,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725742780] [2021-11-06 19:00:25,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:25,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:25,891 INFO L87 Difference]: Start difference. First operand 47314 states and 55802 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 19:00:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:30,588 INFO L93 Difference]: Finished difference Result 138950 states and 163630 transitions. [2021-11-06 19:00:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:30,588 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 19:00:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:30,778 INFO L225 Difference]: With dead ends: 138950 [2021-11-06 19:00:30,779 INFO L226 Difference]: Without dead ends: 91720 [2021-11-06 19:00:30,859 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 19:00:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91720 states. [2021-11-06 19:00:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91720 to 87766. [2021-11-06 19:00:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87766 states, 87734 states have (on average 1.1797250780769144) internal successors, (103502), 87765 states have internal predecessors, (103502), 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 19:00:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87766 states to 87766 states and 103502 transitions. [2021-11-06 19:00:32,972 INFO L78 Accepts]: Start accepts. Automaton has 87766 states and 103502 transitions. Word has length 60 [2021-11-06 19:00:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:32,972 INFO L470 AbstractCegarLoop]: Abstraction has 87766 states and 103502 transitions. [2021-11-06 19:00:32,972 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 19:00:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 87766 states and 103502 transitions. [2021-11-06 19:00:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 19:00:32,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:32,974 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] [2021-11-06 19:00:32,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:00:32,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-06 19:00:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1955602062, now seen corresponding path program 1 times [2021-11-06 19:00:32,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:32,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796883831] [2021-11-06 19:00:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:32,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:33,187 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 19:00:33,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:33,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796883831] [2021-11-06 19:00:33,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796883831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:33,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:33,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:33,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401931940] [2021-11-06 19:00:33,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:33,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:33,189 INFO L87 Difference]: Start difference. First operand 87766 states and 103502 transitions. Second operand has 3 states, 3 states have (on average 22.0) 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 19:00:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:37,522 INFO L93 Difference]: Finished difference Result 172621 states and 203585 transitions. [2021-11-06 19:00:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) 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 66 [2021-11-06 19:00:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:37,697 INFO L225 Difference]: With dead ends: 172621 [2021-11-06 19:00:37,698 INFO L226 Difference]: Without dead ends: 84939 [2021-11-06 19:00:37,806 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 19:00:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84939 states. [2021-11-06 19:00:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84939 to 84833. [2021-11-06 19:00:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84833 states, 84801 states have (on average 1.1790073230268512) internal successors, (99981), 84832 states have internal predecessors, (99981), 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 19:00:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84833 states to 84833 states and 99981 transitions. [2021-11-06 19:00:39,588 INFO L78 Accepts]: Start accepts. Automaton has 84833 states and 99981 transitions. Word has length 66 [2021-11-06 19:00:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:39,589 INFO L470 AbstractCegarLoop]: Abstraction has 84833 states and 99981 transitions. [2021-11-06 19:00:39,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) 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 19:00:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 84833 states and 99981 transitions. [2021-11-06 19:00:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 19:00:39,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:39,591 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, 1, 1] [2021-11-06 19:00:39,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:00:39,592 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-06 19:00:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2000051397, now seen corresponding path program 1 times [2021-11-06 19:00:39,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:39,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665536732] [2021-11-06 19:00:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:39,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:40,088 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 19:00:40,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:40,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665536732] [2021-11-06 19:00:40,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665536732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:40,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:40,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:40,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568497169] [2021-11-06 19:00:40,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:40,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:40,090 INFO L87 Difference]: Start difference. First operand 84833 states and 99981 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) 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 19:00:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:44,971 INFO L93 Difference]: Finished difference Result 253735 states and 299085 transitions. [2021-11-06 19:00:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:44,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) 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 70 [2021-11-06 19:00:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:45,364 INFO L225 Difference]: With dead ends: 253735 [2021-11-06 19:00:45,365 INFO L226 Difference]: Without dead ends: 169051 [2021-11-06 19:00:45,532 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 19:00:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169051 states.