./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.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 dac564b3c3a3d92c70c6b64cab263655f73325d953da5e99709a7250df803cc8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:57:32,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:57:32,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:57:32,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:57:32,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:57:32,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:57:32,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:57:32,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:57:32,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:57:32,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:57:32,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:57:32,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:57:32,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:57:32,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:57:32,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:57:32,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:57:32,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:57:32,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:57:32,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:57:32,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:57:32,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:57:32,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:57:32,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:57:32,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:57:32,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:57:32,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:57:32,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:57:32,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:57:32,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:57:32,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:57:32,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:57:32,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:57:32,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:57:32,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:57:32,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:57:32,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:57:32,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:57:32,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:57:32,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:57:32,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:57:32,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:57:32,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:57:32,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:57:32,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:57:32,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:57:32,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:57:32,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:57:32,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:57:32,728 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:57:32,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:57:32,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:57:32,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:57:32,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:57:32,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:57:32,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:57:32,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:57:32,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:57:32,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:57:32,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:57:32,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:57:32,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:57:32,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:57:32,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:57:32,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:57:32,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:57:32,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:57:32,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:57:32,732 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:57:32,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:57:32,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:57:32,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:57:32,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac564b3c3a3d92c70c6b64cab263655f73325d953da5e99709a7250df803cc8 [2021-11-06 14:57:32,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:57:32,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:57:32,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:57:32,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:57:32,980 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:57:32,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2021-11-06 14:57:33,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa5d7469/fc8eca1d1e6b40e0b4b2f33c8ac23e7d/FLAG48a35c58e [2021-11-06 14:57:33,623 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:57:33,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2021-11-06 14:57:33,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa5d7469/fc8eca1d1e6b40e0b4b2f33c8ac23e7d/FLAG48a35c58e [2021-11-06 14:57:34,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa5d7469/fc8eca1d1e6b40e0b4b2f33c8ac23e7d [2021-11-06 14:57:34,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:57:34,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:57:34,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:57:34,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:57:34,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:57:34,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:57:34" (1/1) ... [2021-11-06 14:57:34,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac39ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:34, skipping insertion in model container [2021-11-06 14:57:34,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:57:34" (1/1) ... [2021-11-06 14:57:34,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:57:34,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:57:34,462 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069] [2021-11-06 14:57:34,462 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6070-6071] [2021-11-06 14:57:34,624 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818] [2021-11-06 14:57:35,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:57:35,295 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:57:35,432 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069] [2021-11-06 14:57:35,433 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6070-6071] [2021-11-06 14:57:35,437 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818] [2021-11-06 14:57:35,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:57:35,661 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:57:35,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35 WrapperNode [2021-11-06 14:57:35,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:57:35,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:57:35,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:57:35,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:57:35,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:35,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:35,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:57:35,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:57:35,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:57:35,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:57:35,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:35,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:35,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:35,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:36,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:36,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:36,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:36,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:57:36,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:57:36,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:57:36,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:57:36,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (1/1) ... [2021-11-06 14:57:36,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:57:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:57:36,172 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 14:57:36,191 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 14:57:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:57:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:57:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:57:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:57:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:57:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:57:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:57:36,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:57:55,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:57:55,794 INFO L299 CfgBuilder]: Removed 945 assume(true) statements. [2021-11-06 14:57:55,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:57:55 BoogieIcfgContainer [2021-11-06 14:57:55,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:57:55,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:57:55,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:57:55,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:57:55,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:57:34" (1/3) ... [2021-11-06 14:57:55,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8136476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:57:55, skipping insertion in model container [2021-11-06 14:57:55,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:57:35" (2/3) ... [2021-11-06 14:57:55,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8136476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:57:55, skipping insertion in model container [2021-11-06 14:57:55,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:57:55" (3/3) ... [2021-11-06 14:57:55,801 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2021-11-06 14:57:55,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:57:55,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-06 14:57:55,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:57:55,852 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 14:57:55,853 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-06 14:57:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 1066 states, 1048 states have (on average 1.4790076335877862) internal successors, (1550), 1065 states have internal predecessors, (1550), 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 14:57:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-06 14:57:55,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:57:55,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:57:55,906 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:57:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:57:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1174501541, now seen corresponding path program 1 times [2021-11-06 14:57:55,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:57:55,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686450093] [2021-11-06 14:57:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:57:55,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:57:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:57:56,528 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 14:57:56,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:57:56,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686450093] [2021-11-06 14:57:56,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686450093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:57:56,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:57:56,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:57:56,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101370867] [2021-11-06 14:57:56,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:57:56,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:57:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:57:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:57:56,554 INFO L87 Difference]: Start difference. First operand has 1066 states, 1048 states have (on average 1.4790076335877862) internal successors, (1550), 1065 states have internal predecessors, (1550), 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 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 14:57:56,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:57:56,789 INFO L93 Difference]: Finished difference Result 2148 states and 3123 transitions. [2021-11-06 14:57:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:57:56,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2021-11-06 14:57:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:57:56,811 INFO L225 Difference]: With dead ends: 2148 [2021-11-06 14:57:56,811 INFO L226 Difference]: Without dead ends: 1071 [2021-11-06 14:57:56,817 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 14:57:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-11-06 14:57:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1070. [2021-11-06 14:57:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1053 states have (on average 1.4586894586894588) internal successors, (1536), 1069 states have internal predecessors, (1536), 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 14:57:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1536 transitions. [2021-11-06 14:57:56,893 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1536 transitions. Word has length 19 [2021-11-06 14:57:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:57:56,894 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1536 transitions. [2021-11-06 14:57:56,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 14:57:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1536 transitions. [2021-11-06 14:57:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 14:57:56,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:57:56,896 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:57:56,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:57:56,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:57:56,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:57:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1689997555, now seen corresponding path program 1 times [2021-11-06 14:57:56,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:57:56,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211845465] [2021-11-06 14:57:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:57:56,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:57:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:57:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:57:57,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:57:57,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211845465] [2021-11-06 14:57:57,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211845465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:57:57,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:57:57,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:57:57,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046236224] [2021-11-06 14:57:57,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:57:57,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:57:57,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:57:57,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:57:57,154 INFO L87 Difference]: Start difference. First operand 1070 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 14:57:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:57:57,371 INFO L93 Difference]: Finished difference Result 2605 states and 3782 transitions. [2021-11-06 14:57:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:57:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 34 [2021-11-06 14:57:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:57:57,377 INFO L225 Difference]: With dead ends: 2605 [2021-11-06 14:57:57,377 INFO L226 Difference]: Without dead ends: 1543 [2021-11-06 14:57:57,379 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 14:57:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-11-06 14:57:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1077. [2021-11-06 14:57:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1060 states have (on average 1.4584905660377359) internal successors, (1546), 1076 states have internal predecessors, (1546), 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 14:57:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1546 transitions. [2021-11-06 14:57:57,401 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1546 transitions. Word has length 34 [2021-11-06 14:57:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:57:57,401 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 1546 transitions. [2021-11-06 14:57:57,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 14:57:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1546 transitions. [2021-11-06 14:57:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 14:57:57,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:57:57,406 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:57:57,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:57:57,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:57:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:57:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash 775252375, now seen corresponding path program 1 times [2021-11-06 14:57:57,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:57:57,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035392914] [2021-11-06 14:57:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:57:57,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:57:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:57:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:57:57,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:57:57,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035392914] [2021-11-06 14:57:57,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035392914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:57:57,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:57:57,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:57:57,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847067122] [2021-11-06 14:57:57,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:57:57,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:57:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:57:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:57:57,631 INFO L87 Difference]: Start difference. First operand 1077 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 14:57:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:57:57,709 INFO L93 Difference]: Finished difference Result 2655 states and 3859 transitions. [2021-11-06 14:57:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:57:57,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 40 [2021-11-06 14:57:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:57:57,714 INFO L225 Difference]: With dead ends: 2655 [2021-11-06 14:57:57,714 INFO L226 Difference]: Without dead ends: 1586 [2021-11-06 14:57:57,716 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 14:57:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-11-06 14:57:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1120. [2021-11-06 14:57:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1103 states have (on average 1.4623753399818675) internal successors, (1613), 1119 states have internal predecessors, (1613), 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 14:57:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1613 transitions. [2021-11-06 14:57:57,738 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1613 transitions. Word has length 40 [2021-11-06 14:57:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:57:57,738 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1613 transitions. [2021-11-06 14:57:57,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 14:57:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1613 transitions. [2021-11-06 14:57:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 14:57:57,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:57:57,741 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:57:57,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:57:57,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:57:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:57:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash 989671317, now seen corresponding path program 1 times [2021-11-06 14:57:57,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:57:57,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964900010] [2021-11-06 14:57:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:57:57,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:57:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:57:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:57:57,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:57:57,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964900010] [2021-11-06 14:57:57,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964900010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:57:57,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:57:57,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:57:57,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012817547] [2021-11-06 14:57:57,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:57:57,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:57:57,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:57:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:57:57,945 INFO L87 Difference]: Start difference. First operand 1120 states and 1613 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 14:58:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:58:00,187 INFO L93 Difference]: Finished difference Result 2252 states and 3248 transitions. [2021-11-06 14:58:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:58:00,187 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 14:58:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:58:00,190 INFO L225 Difference]: With dead ends: 2252 [2021-11-06 14:58:00,190 INFO L226 Difference]: Without dead ends: 1140 [2021-11-06 14:58:00,192 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 14:58:00,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-11-06 14:58:00,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1139. [2021-11-06 14:58:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1122 states have (on average 1.4616755793226381) internal successors, (1640), 1138 states have internal predecessors, (1640), 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 14:58:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1640 transitions. [2021-11-06 14:58:00,210 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1640 transitions. Word has length 52 [2021-11-06 14:58:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:58:00,211 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1640 transitions. [2021-11-06 14:58:00,211 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 14:58:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1640 transitions. [2021-11-06 14:58:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 14:58:00,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:58:00,212 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] [2021-11-06 14:58:00,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:58:00,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:58:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:58:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash 800376203, now seen corresponding path program 1 times [2021-11-06 14:58:00,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:58:00,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070425359] [2021-11-06 14:58:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:00,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:58:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:58:00,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:58:00,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070425359] [2021-11-06 14:58:00,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070425359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:58:00,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:58:00,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:58:00,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989875893] [2021-11-06 14:58:00,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:58:00,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:58:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:58:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:58:00,389 INFO L87 Difference]: Start difference. First operand 1139 states and 1640 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:58:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:58:00,798 INFO L93 Difference]: Finished difference Result 3352 states and 4829 transitions. [2021-11-06 14:58:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:58:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:58:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:58:00,812 INFO L225 Difference]: With dead ends: 3352 [2021-11-06 14:58:00,812 INFO L226 Difference]: Without dead ends: 2221 [2021-11-06 14:58:00,814 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 14:58:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-11-06 14:58:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 1141. [2021-11-06 14:58:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1124 states have (on average 1.4608540925266904) internal successors, (1642), 1140 states have internal predecessors, (1642), 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 14:58:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1642 transitions. [2021-11-06 14:58:00,840 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1642 transitions. Word has length 59 [2021-11-06 14:58:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:58:00,840 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1642 transitions. [2021-11-06 14:58:00,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:58:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1642 transitions. [2021-11-06 14:58:00,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 14:58:00,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:58:00,842 INFO L513 BasicCegarLoop]: trace histogram [3, 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 14:58:00,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:58:00,842 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:58:00,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:58:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash 891754748, now seen corresponding path program 1 times [2021-11-06 14:58:00,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:58:00,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852566847] [2021-11-06 14:58:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:00,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:58:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:58:01,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:58:01,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852566847] [2021-11-06 14:58:01,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852566847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:58:01,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:58:01,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:58:01,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687149888] [2021-11-06 14:58:01,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:58:01,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:58:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:58:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:58:01,077 INFO L87 Difference]: Start difference. First operand 1141 states and 1642 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:58:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:58:03,384 INFO L93 Difference]: Finished difference Result 2956 states and 4218 transitions. [2021-11-06 14:58:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:58:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 63 [2021-11-06 14:58:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:58:03,390 INFO L225 Difference]: With dead ends: 2956 [2021-11-06 14:58:03,390 INFO L226 Difference]: Without dead ends: 1823 [2021-11-06 14:58:03,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:58:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2021-11-06 14:58:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1143. [2021-11-06 14:58:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1126 states have (on average 1.4600355239786855) internal successors, (1644), 1142 states have internal predecessors, (1644), 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 14:58:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1644 transitions. [2021-11-06 14:58:03,461 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1644 transitions. Word has length 63 [2021-11-06 14:58:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:58:03,462 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 1644 transitions. [2021-11-06 14:58:03,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:58:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1644 transitions. [2021-11-06 14:58:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 14:58:03,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:58:03,463 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] [2021-11-06 14:58:03,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:58:03,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:58:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:58:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1649213496, now seen corresponding path program 1 times [2021-11-06 14:58:03,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:58:03,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207590192] [2021-11-06 14:58:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:03,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:58:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:58:03,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:58:03,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207590192] [2021-11-06 14:58:03,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207590192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:58:03,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:58:03,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:58:03,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295833868] [2021-11-06 14:58:03,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:58:03,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:58:03,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:58:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:58:03,654 INFO L87 Difference]: Start difference. First operand 1143 states and 1644 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 14:58:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:58:03,734 INFO L93 Difference]: Finished difference Result 3380 states and 4862 transitions. [2021-11-06 14:58:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:58:03,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 64 [2021-11-06 14:58:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:58:03,741 INFO L225 Difference]: With dead ends: 3380 [2021-11-06 14:58:03,741 INFO L226 Difference]: Without dead ends: 2245 [2021-11-06 14:58:03,743 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 14:58:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2021-11-06 14:58:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 1197. [2021-11-06 14:58:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1180 states have (on average 1.464406779661017) internal successors, (1728), 1196 states have internal predecessors, (1728), 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 14:58:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1728 transitions. [2021-11-06 14:58:03,773 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1728 transitions. Word has length 64 [2021-11-06 14:58:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:58:03,774 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1728 transitions. [2021-11-06 14:58:03,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 14:58:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1728 transitions. [2021-11-06 14:58:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 14:58:03,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:58:03,775 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] [2021-11-06 14:58:03,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:58:03,776 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:58:03,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:58:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1062407482, now seen corresponding path program 1 times [2021-11-06 14:58:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:58:03,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151840879] [2021-11-06 14:58:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:03,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:58:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:58:03,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:58:03,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151840879] [2021-11-06 14:58:03,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151840879] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:58:03,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263673654] [2021-11-06 14:58:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:03,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:58:03,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:58:04,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:58:04,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:58:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:04,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 3210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:58:04,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:58:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:58:05,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263673654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:58:05,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:58:05,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 14:58:05,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926349266] [2021-11-06 14:58:05,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:58:05,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:58:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:58:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:58:05,564 INFO L87 Difference]: Start difference. First operand 1197 states and 1728 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 14:58:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:58:05,908 INFO L93 Difference]: Finished difference Result 1197 states and 1728 transitions. [2021-11-06 14:58:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:58:05,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 64 [2021-11-06 14:58:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:58:05,912 INFO L225 Difference]: With dead ends: 1197 [2021-11-06 14:58:05,912 INFO L226 Difference]: Without dead ends: 1193 [2021-11-06 14:58:05,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:58:05,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-11-06 14:58:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1193. [2021-11-06 14:58:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1178 states have (on average 1.4634974533106961) internal successors, (1724), 1192 states have internal predecessors, (1724), 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 14:58:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1724 transitions. [2021-11-06 14:58:05,988 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1724 transitions. Word has length 64 [2021-11-06 14:58:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:58:05,990 INFO L470 AbstractCegarLoop]: Abstraction has 1193 states and 1724 transitions. [2021-11-06 14:58:05,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 14:58:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1724 transitions. [2021-11-06 14:58:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 14:58:05,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:58:05,996 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, 1, 1, 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 14:58:06,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 14:58:06,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:58:06,212 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:58:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:58:06,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1174963038, now seen corresponding path program 1 times [2021-11-06 14:58:06,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:58:06,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918380220] [2021-11-06 14:58:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:06,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:58:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:58:06,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:58:06,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918380220] [2021-11-06 14:58:06,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918380220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:58:06,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025498603] [2021-11-06 14:58:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:06,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:58:06,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:58:06,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:58:06,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:58:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:07,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 3831 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 14:58:07,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:58:07,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:58:07,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025498603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:58:07,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:58:07,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 14:58:07,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737620377] [2021-11-06 14:58:07,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:58:07,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:58:07,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:58:07,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:58:07,835 INFO L87 Difference]: Start difference. First operand 1193 states and 1724 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 14:58:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:58:07,969 INFO L93 Difference]: Finished difference Result 2384 states and 3446 transitions. [2021-11-06 14:58:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:58:07,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 109 [2021-11-06 14:58:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:58:07,974 INFO L225 Difference]: With dead ends: 2384 [2021-11-06 14:58:07,974 INFO L226 Difference]: Without dead ends: 1199 [2021-11-06 14:58:07,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:58:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-06 14:58:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1194. [2021-11-06 14:58:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1179 states have (on average 1.4631043256997456) internal successors, (1725), 1193 states have internal predecessors, (1725), 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 14:58:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1725 transitions. [2021-11-06 14:58:08,003 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1725 transitions. Word has length 109 [2021-11-06 14:58:08,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:58:08,003 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1725 transitions. [2021-11-06 14:58:08,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 14:58:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1725 transitions. [2021-11-06 14:58:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 14:58:08,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:58:08,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:08,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 14:58:08,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-06 14:58:08,224 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:58:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:58:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2039029606, now seen corresponding path program 1 times [2021-11-06 14:58:08,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:58:08,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218692167] [2021-11-06 14:58:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:08,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:58:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 14:58:08,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:58:08,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218692167] [2021-11-06 14:58:08,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218692167] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:58:08,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843765375] [2021-11-06 14:58:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:08,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:58:08,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:58:08,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:58:08,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:58:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:09,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:58:09,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:58:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 14:58:10,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843765375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:58:10,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:58:10,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:58:10,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193957980] [2021-11-06 14:58:10,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:58:10,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:58:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:58:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:58:10,085 INFO L87 Difference]: Start difference. First operand 1194 states and 1725 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 14:58:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:58:10,771 INFO L93 Difference]: Finished difference Result 4649 states and 6721 transitions. [2021-11-06 14:58:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:58:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 115 [2021-11-06 14:58:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:58:10,785 INFO L225 Difference]: With dead ends: 4649 [2021-11-06 14:58:10,785 INFO L226 Difference]: Without dead ends: 3463 [2021-11-06 14:58:10,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:58:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2021-11-06 14:58:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 1214. [2021-11-06 14:58:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1199 states have (on average 1.4620517097581318) internal successors, (1753), 1213 states have internal predecessors, (1753), 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 14:58:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1753 transitions. [2021-11-06 14:58:10,822 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1753 transitions. Word has length 115 [2021-11-06 14:58:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:58:10,823 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1753 transitions. [2021-11-06 14:58:10,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 14:58:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1753 transitions. [2021-11-06 14:58:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-06 14:58:10,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:58:10,824 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:10,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 14:58:11,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:58:11,047 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:58:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:58:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash -707228139, now seen corresponding path program 2 times [2021-11-06 14:58:11,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:58:11,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200977847] [2021-11-06 14:58:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:58:11,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:58:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:58:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 14:58:11,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:58:11,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200977847] [2021-11-06 14:58:11,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200977847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:58:11,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914813247] [2021-11-06 14:58:11,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:58:11,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:58:11,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:58:11,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:58:11,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 15:03:53,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 15:03:53,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:03:53,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 3608 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-06 15:03:53,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:03:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 15:03:54,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914813247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:03:54,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:03:54,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-06 15:03:54,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955424571] [2021-11-06 15:03:54,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:03:54,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:03:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:03:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:03:54,146 INFO L87 Difference]: Start difference. First operand 1214 states and 1753 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 15:03:54,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:03:54,562 INFO L93 Difference]: Finished difference Result 2667 states and 3861 transitions. [2021-11-06 15:03:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:03:54,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 120 [2021-11-06 15:03:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:03:54,567 INFO L225 Difference]: With dead ends: 2667 [2021-11-06 15:03:54,567 INFO L226 Difference]: Without dead ends: 1461 [2021-11-06 15:03:54,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-06 15:03:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-11-06 15:03:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1218. [2021-11-06 15:03:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1203 states have (on average 1.460515378221114) internal successors, (1757), 1217 states have internal predecessors, (1757), 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 15:03:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1757 transitions. [2021-11-06 15:03:54,598 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1757 transitions. Word has length 120 [2021-11-06 15:03:54,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:03:54,599 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1757 transitions. [2021-11-06 15:03:54,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 15:03:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1757 transitions. [2021-11-06 15:03:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 15:03:54,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:03:54,600 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:54,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 15:03:54,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:03:54,815 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 15:03:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:03:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash 536078969, now seen corresponding path program 1 times [2021-11-06 15:03:54,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:03:54,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496280600] [2021-11-06 15:03:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:03:54,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:03:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:03:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 15:03:55,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:03:55,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496280600] [2021-11-06 15:03:55,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496280600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:03:55,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260384113] [2021-11-06 15:03:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:03:55,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:03:55,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:03:55,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:03:55,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 15:03:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:03:56,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 3954 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:03:56,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:03:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:03:56,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260384113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:03:56,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:03:56,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-11-06 15:03:56,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383003040] [2021-11-06 15:03:56,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:03:56,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:03:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:03:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:03:56,838 INFO L87 Difference]: Start difference. First operand 1218 states and 1757 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 15:03:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:03:58,297 INFO L93 Difference]: Finished difference Result 5867 states and 8464 transitions. [2021-11-06 15:03:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 15:03:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 122 [2021-11-06 15:03:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:03:58,310 INFO L225 Difference]: With dead ends: 5867 [2021-11-06 15:03:58,310 INFO L226 Difference]: Without dead ends: 4657 [2021-11-06 15:03:58,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-06 15:03:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2021-11-06 15:03:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 1244. [2021-11-06 15:03:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1229 states have (on average 1.4572823433685924) internal successors, (1791), 1243 states have internal predecessors, (1791), 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 15:03:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1791 transitions. [2021-11-06 15:03:58,354 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1791 transitions. Word has length 122 [2021-11-06 15:03:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:03:58,354 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1791 transitions. [2021-11-06 15:03:58,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 15:03:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1791 transitions. [2021-11-06 15:03:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 15:03:58,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:03:58,356 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:58,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 15:03:58,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 15:03:58,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 15:03:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:03:58,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1017359346, now seen corresponding path program 2 times [2021-11-06 15:03:58,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:03:58,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397236712] [2021-11-06 15:03:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:03:58,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:03:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:03:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 15:03:59,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:03:59,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397236712] [2021-11-06 15:03:59,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397236712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:03:59,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395214611] [2021-11-06 15:03:59,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:03:59,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:03:59,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:03:59,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:03:59,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15