./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU --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 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:13:57,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:13:57,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:13:57,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:13:57,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:13:57,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:13:57,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:13:57,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:13:57,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:13:57,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:13:57,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:13:57,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:13:57,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:13:57,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:13:57,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:13:57,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:13:57,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:13:57,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:13:57,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:13:57,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:13:57,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:13:57,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:13:57,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:13:57,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:13:57,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:13:57,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:13:57,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:13:57,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:13:57,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:13:57,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:13:57,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:13:57,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:13:57,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:13:57,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:13:57,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:13:57,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:13:57,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:13:57,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:13:57,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:13:57,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:13:57,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:13:57,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:13:57,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:13:57,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:13:57,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:13:57,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:13:57,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:13:57,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:13:57,661 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:13:57,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:13:57,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:13:57,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:13:57,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:13:57,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:13:57,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:13:57,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:13:57,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:13:57,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:13:57,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:13:57,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:13:57,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:13:57,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:13:57,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:13:57,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:13:57,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:13:57,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:13:57,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:13:57,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:13:57,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:13:57,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:13:57,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:13:57,669 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2021-11-02 22:13:58,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:13:58,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:13:58,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:13:58,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:13:58,029 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:13:58,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-02 22:13:58,132 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/data/0ab98e8c9/73308e99188d4a80a5ac3f6952287a49/FLAGa93d88420 [2021-11-02 22:13:59,080 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:13:59,081 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-02 22:13:59,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/data/0ab98e8c9/73308e99188d4a80a5ac3f6952287a49/FLAGa93d88420 [2021-11-02 22:13:59,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/data/0ab98e8c9/73308e99188d4a80a5ac3f6952287a49 [2021-11-02 22:13:59,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:13:59,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:13:59,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:13:59,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:13:59,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:13:59,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:13:59" (1/1) ... [2021-11-02 22:13:59,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49167964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:13:59, skipping insertion in model container [2021-11-02 22:13:59,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:13:59" (1/1) ... [2021-11-02 22:13:59,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:13:59,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:14:01,576 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-02 22:14:01,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:14:01,829 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:14:02,071 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-02 22:14:02,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:14:02,231 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:14:02,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02 WrapperNode [2021-11-02 22:14:02,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:14:02,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:14:02,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:14:02,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:14:02,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:14:02,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:14:02,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:14:02,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:14:02,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:14:02,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:14:02,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:14:02,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:14:02,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (1/1) ... [2021-11-02 22:14:02,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:14:03,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:03,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:14:03,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:14:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:14:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:14:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:14:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:14:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:14:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:14:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:14:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:14:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:14:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:14:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:14:03,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:14:17,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:14:17,899 INFO L299 CfgBuilder]: Removed 1477 assume(true) statements. [2021-11-02 22:14:17,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:14:17 BoogieIcfgContainer [2021-11-02 22:14:17,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:14:17,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:14:17,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:14:17,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:14:17,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:13:59" (1/3) ... [2021-11-02 22:14:17,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335e75b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:14:17, skipping insertion in model container [2021-11-02 22:14:17,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:02" (2/3) ... [2021-11-02 22:14:17,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335e75b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:14:17, skipping insertion in model container [2021-11-02 22:14:17,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:14:17" (3/3) ... [2021-11-02 22:14:17,914 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-02 22:14:17,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:14:17,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-02 22:14:17,982 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:14:17,988 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 [2021-11-02 22:14:17,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-02 22:14:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 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) [2021-11-02 22:14:18,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:14:18,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:18,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:18,045 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -285552863, now seen corresponding path program 1 times [2021-11-02 22:14:18,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:18,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523062822] [2021-11-02 22:14:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:18,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:18,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:18,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523062822] [2021-11-02 22:14:18,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523062822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:18,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:18,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:14:18,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871103434] [2021-11-02 22:14:18,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:14:18,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:14:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:14:18,748 INFO L87 Difference]: Start difference. First operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 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 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2021-11-02 22:14:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:18,867 INFO L93 Difference]: Finished difference Result 2436 states and 3241 transitions. [2021-11-02 22:14:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:14:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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 69 [2021-11-02 22:14:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:18,902 INFO L225 Difference]: With dead ends: 2436 [2021-11-02 22:14:18,903 INFO L226 Difference]: Without dead ends: 1211 [2021-11-02 22:14:18,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:14:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-02 22:14:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2021-11-02 22:14:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1173 states have (on average 1.3213981244671782) internal successors, (1550), 1210 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) [2021-11-02 22:14:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1550 transitions. [2021-11-02 22:14:19,053 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1550 transitions. Word has length 69 [2021-11-02 22:14:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:19,054 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 1550 transitions. [2021-11-02 22:14:19,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2021-11-02 22:14:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1550 transitions. [2021-11-02 22:14:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:14:19,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:19,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:19,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:14:19,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash 738566293, now seen corresponding path program 1 times [2021-11-02 22:14:19,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:19,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888490766] [2021-11-02 22:14:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:19,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:19,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:19,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888490766] [2021-11-02 22:14:19,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888490766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:19,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:19,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:19,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812916752] [2021-11-02 22:14:19,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:19,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:19,439 INFO L87 Difference]: Start difference. First operand 1211 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-02 22:14:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:19,593 INFO L93 Difference]: Finished difference Result 2395 states and 3077 transitions. [2021-11-02 22:14:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-02 22:14:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:19,601 INFO L225 Difference]: With dead ends: 2395 [2021-11-02 22:14:19,601 INFO L226 Difference]: Without dead ends: 1216 [2021-11-02 22:14:19,604 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 [2021-11-02 22:14:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-02 22:14:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2021-11-02 22:14:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1178 states have (on average 1.3200339558573855) internal successors, (1555), 1215 states have internal predecessors, (1555), 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) [2021-11-02 22:14:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1555 transitions. [2021-11-02 22:14:19,650 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1555 transitions. Word has length 69 [2021-11-02 22:14:19,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:19,650 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1555 transitions. [2021-11-02 22:14:19,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-02 22:14:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1555 transitions. [2021-11-02 22:14:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 22:14:19,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:19,658 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:19,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:14:19,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:19,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1977861716, now seen corresponding path program 1 times [2021-11-02 22:14:19,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:19,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666111779] [2021-11-02 22:14:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:19,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:14:20,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:20,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666111779] [2021-11-02 22:14:20,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666111779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:20,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:20,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:20,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224728625] [2021-11-02 22:14:20,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:20,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:20,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:20,045 INFO L87 Difference]: Start difference. First operand 1216 states and 1555 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:20,194 INFO L93 Difference]: Finished difference Result 2388 states and 3065 transitions. [2021-11-02 22:14:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:20,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 22:14:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:20,203 INFO L225 Difference]: With dead ends: 2388 [2021-11-02 22:14:20,203 INFO L226 Difference]: Without dead ends: 1220 [2021-11-02 22:14:20,205 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 [2021-11-02 22:14:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-02 22:14:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2021-11-02 22:14:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1182 states have (on average 1.3189509306260576) internal successors, (1559), 1219 states have internal predecessors, (1559), 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) [2021-11-02 22:14:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1559 transitions. [2021-11-02 22:14:20,248 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1559 transitions. Word has length 74 [2021-11-02 22:14:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:20,251 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1559 transitions. [2021-11-02 22:14:20,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1559 transitions. [2021-11-02 22:14:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 22:14:20,253 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:20,254 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:20,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:14:20,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1383564200, now seen corresponding path program 1 times [2021-11-02 22:14:20,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:20,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978901716] [2021-11-02 22:14:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:20,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:20,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:20,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978901716] [2021-11-02 22:14:20,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978901716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:20,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:20,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:20,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556038414] [2021-11-02 22:14:20,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:20,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:20,635 INFO L87 Difference]: Start difference. First operand 1220 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:22,910 INFO L93 Difference]: Finished difference Result 3487 states and 4486 transitions. [2021-11-02 22:14:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:22,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-02 22:14:22,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:22,927 INFO L225 Difference]: With dead ends: 3487 [2021-11-02 22:14:22,927 INFO L226 Difference]: Without dead ends: 2335 [2021-11-02 22:14:22,930 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 [2021-11-02 22:14:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-11-02 22:14:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2271. [2021-11-02 22:14:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2233 states have (on average 1.329601433049709) internal successors, (2969), 2270 states have internal predecessors, (2969), 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) [2021-11-02 22:14:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2969 transitions. [2021-11-02 22:14:23,027 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2969 transitions. Word has length 78 [2021-11-02 22:14:23,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:23,030 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 2969 transitions. [2021-11-02 22:14:23,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2969 transitions. [2021-11-02 22:14:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:14:23,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:23,032 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:23,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:14:23,033 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:23,033 INFO L85 PathProgramCache]: Analyzing trace with hash -65187952, now seen corresponding path program 1 times [2021-11-02 22:14:23,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:23,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848898627] [2021-11-02 22:14:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:23,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:23,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:23,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848898627] [2021-11-02 22:14:23,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848898627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:23,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:23,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:23,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668494781] [2021-11-02 22:14:23,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:23,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:23,290 INFO L87 Difference]: Start difference. First operand 2271 states and 2969 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-02 22:14:23,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:23,572 INFO L93 Difference]: Finished difference Result 5542 states and 7229 transitions. [2021-11-02 22:14:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 22:14:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:23,592 INFO L225 Difference]: With dead ends: 5542 [2021-11-02 22:14:23,592 INFO L226 Difference]: Without dead ends: 3339 [2021-11-02 22:14:23,600 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 [2021-11-02 22:14:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2021-11-02 22:14:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3287. [2021-11-02 22:14:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3249 states have (on average 1.3234841489689135) internal successors, (4300), 3286 states have internal predecessors, (4300), 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) [2021-11-02 22:14:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 4300 transitions. [2021-11-02 22:14:23,715 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 4300 transitions. Word has length 79 [2021-11-02 22:14:23,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:23,716 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 4300 transitions. [2021-11-02 22:14:23,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-02 22:14:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 4300 transitions. [2021-11-02 22:14:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:14:23,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:23,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:23,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:14:23,724 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1595769926, now seen corresponding path program 1 times [2021-11-02 22:14:23,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:23,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481003251] [2021-11-02 22:14:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:23,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:24,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:24,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481003251] [2021-11-02 22:14:24,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481003251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:24,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:24,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:14:24,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165821596] [2021-11-02 22:14:24,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:24,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:24,157 INFO L87 Difference]: Start difference. First operand 3287 states and 4300 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2021-11-02 22:14:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:24,249 INFO L93 Difference]: Finished difference Result 3287 states and 4300 transitions. [2021-11-02 22:14:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:24,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 22:14:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:24,272 INFO L225 Difference]: With dead ends: 3287 [2021-11-02 22:14:24,272 INFO L226 Difference]: Without dead ends: 3285 [2021-11-02 22:14:24,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2021-11-02 22:14:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3285. [2021-11-02 22:14:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 3248 states have (on average 1.3232758620689655) internal successors, (4298), 3284 states have internal predecessors, (4298), 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) [2021-11-02 22:14:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4298 transitions. [2021-11-02 22:14:24,422 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4298 transitions. Word has length 87 [2021-11-02 22:14:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:24,422 INFO L470 AbstractCegarLoop]: Abstraction has 3285 states and 4298 transitions. [2021-11-02 22:14:24,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2021-11-02 22:14:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4298 transitions. [2021-11-02 22:14:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:14:24,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:24,425 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:24,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:14:24,425 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1858990689, now seen corresponding path program 1 times [2021-11-02 22:14:24,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:24,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240334430] [2021-11-02 22:14:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:24,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:24,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:24,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240334430] [2021-11-02 22:14:24,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240334430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:24,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:24,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:24,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500305296] [2021-11-02 22:14:24,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:24,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:24,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:24,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:24,659 INFO L87 Difference]: Start difference. First operand 3285 states and 4298 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-02 22:14:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:24,956 INFO L93 Difference]: Finished difference Result 8139 states and 10743 transitions. [2021-11-02 22:14:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:24,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 22:14:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:24,991 INFO L225 Difference]: With dead ends: 8139 [2021-11-02 22:14:24,991 INFO L226 Difference]: Without dead ends: 4922 [2021-11-02 22:14:24,998 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 [2021-11-02 22:14:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4922 states. [2021-11-02 22:14:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4922 to 4869. [2021-11-02 22:14:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4869 states, 4832 states have (on average 1.341473509933775) internal successors, (6482), 4868 states have internal predecessors, (6482), 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) [2021-11-02 22:14:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 6482 transitions. [2021-11-02 22:14:25,364 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 6482 transitions. Word has length 87 [2021-11-02 22:14:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:25,365 INFO L470 AbstractCegarLoop]: Abstraction has 4869 states and 6482 transitions. [2021-11-02 22:14:25,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-02 22:14:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 6482 transitions. [2021-11-02 22:14:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:14:25,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:25,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:25,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:14:25,368 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2070729988, now seen corresponding path program 1 times [2021-11-02 22:14:25,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:25,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732184933] [2021-11-02 22:14:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:25,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:25,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:25,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732184933] [2021-11-02 22:14:25,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732184933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:25,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:25,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:14:25,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548597108] [2021-11-02 22:14:25,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:25,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:25,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:25,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:25,640 INFO L87 Difference]: Start difference. First operand 4869 states and 6482 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:25,779 INFO L93 Difference]: Finished difference Result 4869 states and 6482 transitions. [2021-11-02 22:14:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 22:14:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:25,806 INFO L225 Difference]: With dead ends: 4869 [2021-11-02 22:14:25,807 INFO L226 Difference]: Without dead ends: 4867 [2021-11-02 22:14:25,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2021-11-02 22:14:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4867. [2021-11-02 22:14:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4831 states have (on average 1.3413371972676464) internal successors, (6480), 4866 states have internal predecessors, (6480), 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) [2021-11-02 22:14:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6480 transitions. [2021-11-02 22:14:26,031 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6480 transitions. Word has length 88 [2021-11-02 22:14:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:26,032 INFO L470 AbstractCegarLoop]: Abstraction has 4867 states and 6480 transitions. [2021-11-02 22:14:26,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:26,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6480 transitions. [2021-11-02 22:14:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:14:26,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:26,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:26,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:14:26,035 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:26,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash 231889680, now seen corresponding path program 1 times [2021-11-02 22:14:26,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:26,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757849089] [2021-11-02 22:14:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:26,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:26,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:26,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757849089] [2021-11-02 22:14:26,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757849089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:26,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:26,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:14:26,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704035627] [2021-11-02 22:14:26,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:26,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:26,371 INFO L87 Difference]: Start difference. First operand 4867 states and 6480 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2021-11-02 22:14:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:26,541 INFO L93 Difference]: Finished difference Result 4867 states and 6480 transitions. [2021-11-02 22:14:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:26,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 22:14:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:26,594 INFO L225 Difference]: With dead ends: 4867 [2021-11-02 22:14:26,595 INFO L226 Difference]: Without dead ends: 4865 [2021-11-02 22:14:26,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2021-11-02 22:14:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4865. [2021-11-02 22:14:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 4830 states have (on average 1.34120082815735) internal successors, (6478), 4864 states have internal predecessors, (6478), 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) [2021-11-02 22:14:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 6478 transitions. [2021-11-02 22:14:26,891 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 6478 transitions. Word has length 89 [2021-11-02 22:14:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:26,891 INFO L470 AbstractCegarLoop]: Abstraction has 4865 states and 6478 transitions. [2021-11-02 22:14:26,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2021-11-02 22:14:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 6478 transitions. [2021-11-02 22:14:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 22:14:26,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:26,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:26,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:14:26,895 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:26,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1401344634, now seen corresponding path program 1 times [2021-11-02 22:14:26,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:26,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922242056] [2021-11-02 22:14:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:26,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:27,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:27,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922242056] [2021-11-02 22:14:27,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922242056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:27,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:27,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:14:27,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195096642] [2021-11-02 22:14:27,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:27,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:27,228 INFO L87 Difference]: Start difference. First operand 4865 states and 6478 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2021-11-02 22:14:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:27,755 INFO L93 Difference]: Finished difference Result 13993 states and 18741 transitions. [2021-11-02 22:14:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2021-11-02 22:14:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:27,784 INFO L225 Difference]: With dead ends: 13993 [2021-11-02 22:14:27,785 INFO L226 Difference]: Without dead ends: 9196 [2021-11-02 22:14:27,797 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2021-11-02 22:14:28,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 8879. [2021-11-02 22:14:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8879 states, 8844 states have (on average 1.347241067390321) internal successors, (11915), 8878 states have internal predecessors, (11915), 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) [2021-11-02 22:14:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8879 states to 8879 states and 11915 transitions. [2021-11-02 22:14:28,310 INFO L78 Accepts]: Start accepts. Automaton has 8879 states and 11915 transitions. Word has length 90 [2021-11-02 22:14:28,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:28,310 INFO L470 AbstractCegarLoop]: Abstraction has 8879 states and 11915 transitions. [2021-11-02 22:14:28,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2021-11-02 22:14:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8879 states and 11915 transitions. [2021-11-02 22:14:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:14:28,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:28,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:28,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:14:28,313 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash -492000806, now seen corresponding path program 1 times [2021-11-02 22:14:28,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:28,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202944012] [2021-11-02 22:14:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:28,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:28,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:28,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202944012] [2021-11-02 22:14:28,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202944012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:28,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:28,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:14:28,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740248040] [2021-11-02 22:14:28,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:28,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:28,632 INFO L87 Difference]: Start difference. First operand 8879 states and 11915 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-11-02 22:14:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:28,950 INFO L93 Difference]: Finished difference Result 8879 states and 11915 transitions. [2021-11-02 22:14:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:28,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 22:14:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:28,976 INFO L225 Difference]: With dead ends: 8879 [2021-11-02 22:14:28,977 INFO L226 Difference]: Without dead ends: 8869 [2021-11-02 22:14:28,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2021-11-02 22:14:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8869. [2021-11-02 22:14:29,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8839 states have (on average 1.3437040389184296) internal successors, (11877), 8868 states have internal predecessors, (11877), 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) [2021-11-02 22:14:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 11877 transitions. [2021-11-02 22:14:29,493 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 11877 transitions. Word has length 91 [2021-11-02 22:14:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:29,494 INFO L470 AbstractCegarLoop]: Abstraction has 8869 states and 11877 transitions. [2021-11-02 22:14:29,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-11-02 22:14:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 11877 transitions. [2021-11-02 22:14:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 22:14:29,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:29,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:29,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:14:29,497 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1927854096, now seen corresponding path program 1 times [2021-11-02 22:14:29,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:29,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97782092] [2021-11-02 22:14:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:29,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:29,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:29,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97782092] [2021-11-02 22:14:29,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97782092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:29,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:29,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:14:29,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560132026] [2021-11-02 22:14:29,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:29,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:29,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:29,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:29,756 INFO L87 Difference]: Start difference. First operand 8869 states and 11877 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2021-11-02 22:14:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:30,673 INFO L93 Difference]: Finished difference Result 25375 states and 34171 transitions. [2021-11-02 22:14:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 92 [2021-11-02 22:14:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:30,722 INFO L225 Difference]: With dead ends: 25375 [2021-11-02 22:14:30,722 INFO L226 Difference]: Without dead ends: 16566 [2021-11-02 22:14:30,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16566 states. [2021-11-02 22:14:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16566 to 15610. [2021-11-02 22:14:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15610 states, 15580 states have (on average 1.3480744544287548) internal successors, (21003), 15609 states have internal predecessors, (21003), 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) [2021-11-02 22:14:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15610 states to 15610 states and 21003 transitions. [2021-11-02 22:14:31,654 INFO L78 Accepts]: Start accepts. Automaton has 15610 states and 21003 transitions. Word has length 92 [2021-11-02 22:14:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:31,654 INFO L470 AbstractCegarLoop]: Abstraction has 15610 states and 21003 transitions. [2021-11-02 22:14:31,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2021-11-02 22:14:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 15610 states and 21003 transitions. [2021-11-02 22:14:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 22:14:31,661 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:31,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:31,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:14:31,663 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -848848089, now seen corresponding path program 1 times [2021-11-02 22:14:31,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:31,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563993938] [2021-11-02 22:14:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:31,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:31,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:31,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563993938] [2021-11-02 22:14:31,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563993938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:31,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:31,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:31,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309164718] [2021-11-02 22:14:31,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:31,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:31,926 INFO L87 Difference]: Start difference. First operand 15610 states and 21003 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-02 22:14:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:34,619 INFO L93 Difference]: Finished difference Result 23731 states and 31916 transitions. [2021-11-02 22:14:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:34,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-11-02 22:14:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:34,645 INFO L225 Difference]: With dead ends: 23731 [2021-11-02 22:14:34,645 INFO L226 Difference]: Without dead ends: 8187 [2021-11-02 22:14:34,675 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 [2021-11-02 22:14:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2021-11-02 22:14:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 8130. [2021-11-02 22:14:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 8100 states have (on average 1.3482716049382717) internal successors, (10921), 8129 states have internal predecessors, (10921), 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) [2021-11-02 22:14:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 10921 transitions. [2021-11-02 22:14:35,174 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 10921 transitions. Word has length 113 [2021-11-02 22:14:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:35,175 INFO L470 AbstractCegarLoop]: Abstraction has 8130 states and 10921 transitions. [2021-11-02 22:14:35,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-02 22:14:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 10921 transitions. [2021-11-02 22:14:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 22:14:35,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:35,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:35,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:14:35,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2116476241, now seen corresponding path program 1 times [2021-11-02 22:14:35,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:35,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118615635] [2021-11-02 22:14:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:35,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:35,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:35,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118615635] [2021-11-02 22:14:35,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118615635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:35,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:35,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:35,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070058699] [2021-11-02 22:14:35,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:35,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:35,487 INFO L87 Difference]: Start difference. First operand 8130 states and 10921 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-02 22:14:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:38,125 INFO L93 Difference]: Finished difference Result 18545 states and 24983 transitions. [2021-11-02 22:14:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:38,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 116 [2021-11-02 22:14:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:38,156 INFO L225 Difference]: With dead ends: 18545 [2021-11-02 22:14:38,156 INFO L226 Difference]: Without dead ends: 10606 [2021-11-02 22:14:38,172 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 [2021-11-02 22:14:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10606 states. [2021-11-02 22:14:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10606 to 10509. [2021-11-02 22:14:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10509 states, 10479 states have (on average 1.3473613894455578) internal successors, (14119), 10508 states have internal predecessors, (14119), 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) [2021-11-02 22:14:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10509 states to 10509 states and 14119 transitions. [2021-11-02 22:14:38,632 INFO L78 Accepts]: Start accepts. Automaton has 10509 states and 14119 transitions. Word has length 116 [2021-11-02 22:14:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:38,633 INFO L470 AbstractCegarLoop]: Abstraction has 10509 states and 14119 transitions. [2021-11-02 22:14:38,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-02 22:14:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 10509 states and 14119 transitions. [2021-11-02 22:14:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 22:14:38,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:38,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:38,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:14:38,638 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:38,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1412012122, now seen corresponding path program 1 times [2021-11-02 22:14:38,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:38,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21258056] [2021-11-02 22:14:38,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:38,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:14:38,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:38,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21258056] [2021-11-02 22:14:38,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21258056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:38,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:38,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:38,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370145508] [2021-11-02 22:14:38,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:38,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:38,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:38,891 INFO L87 Difference]: Start difference. First operand 10509 states and 14119 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-02 22:14:41,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:41,386 INFO L93 Difference]: Finished difference Result 10509 states and 14119 transitions. [2021-11-02 22:14:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:41,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 119 [2021-11-02 22:14:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:41,416 INFO L225 Difference]: With dead ends: 10509 [2021-11-02 22:14:41,416 INFO L226 Difference]: Without dead ends: 10501 [2021-11-02 22:14:41,421 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 [2021-11-02 22:14:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10501 states. [2021-11-02 22:14:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10501 to 10501. [2021-11-02 22:14:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 10475 states have (on average 1.3457756563245824) internal successors, (14097), 10500 states have internal predecessors, (14097), 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) [2021-11-02 22:14:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 14097 transitions. [2021-11-02 22:14:41,891 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 14097 transitions. Word has length 119 [2021-11-02 22:14:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:41,892 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 14097 transitions. [2021-11-02 22:14:41,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-02 22:14:41,892 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 14097 transitions. [2021-11-02 22:14:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:14:41,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:41,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:41,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:14:41,897 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:41,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1849179054, now seen corresponding path program 1 times [2021-11-02 22:14:41,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:41,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085223506] [2021-11-02 22:14:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:41,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:14:42,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:42,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085223506] [2021-11-02 22:14:42,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085223506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:42,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:42,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:42,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650990960] [2021-11-02 22:14:42,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:42,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:42,131 INFO L87 Difference]: Start difference. First operand 10501 states and 14097 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-02 22:14:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:44,805 INFO L93 Difference]: Finished difference Result 24382 states and 32945 transitions. [2021-11-02 22:14:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2021-11-02 22:14:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:44,847 INFO L225 Difference]: With dead ends: 24382 [2021-11-02 22:14:44,848 INFO L226 Difference]: Without dead ends: 14072 [2021-11-02 22:14:44,868 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 [2021-11-02 22:14:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14072 states. [2021-11-02 22:14:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14072 to 13815. [2021-11-02 22:14:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13815 states, 13789 states have (on average 1.355573283051708) internal successors, (18692), 13814 states have internal predecessors, (18692), 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) [2021-11-02 22:14:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13815 states to 13815 states and 18692 transitions. [2021-11-02 22:14:45,568 INFO L78 Accepts]: Start accepts. Automaton has 13815 states and 18692 transitions. Word has length 121 [2021-11-02 22:14:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:45,568 INFO L470 AbstractCegarLoop]: Abstraction has 13815 states and 18692 transitions. [2021-11-02 22:14:45,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-02 22:14:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 13815 states and 18692 transitions. [2021-11-02 22:14:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 22:14:45,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:45,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:45,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:14:45,574 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1139305928, now seen corresponding path program 1 times [2021-11-02 22:14:45,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:45,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611356017] [2021-11-02 22:14:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:45,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:14:45,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:45,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611356017] [2021-11-02 22:14:45,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611356017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:45,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:45,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:14:45,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590886683] [2021-11-02 22:14:45,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:14:45,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:14:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:14:45,871 INFO L87 Difference]: Start difference. First operand 13815 states and 18692 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-11-02 22:14:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:48,585 INFO L93 Difference]: Finished difference Result 27531 states and 37260 transitions. [2021-11-02 22:14:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:14:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 128 [2021-11-02 22:14:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:48,619 INFO L225 Difference]: With dead ends: 27531 [2021-11-02 22:14:48,620 INFO L226 Difference]: Without dead ends: 13907 [2021-11-02 22:14:48,640 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 [2021-11-02 22:14:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13907 states. [2021-11-02 22:14:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13907 to 13569. [2021-11-02 22:14:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13569 states, 13547 states have (on average 1.3544696242710563) internal successors, (18349), 13568 states have internal predecessors, (18349), 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) [2021-11-02 22:14:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13569 states to 13569 states and 18349 transitions. [2021-11-02 22:14:49,216 INFO L78 Accepts]: Start accepts. Automaton has 13569 states and 18349 transitions. Word has length 128 [2021-11-02 22:14:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:49,217 INFO L470 AbstractCegarLoop]: Abstraction has 13569 states and 18349 transitions. [2021-11-02 22:14:49,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-11-02 22:14:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13569 states and 18349 transitions. [2021-11-02 22:14:49,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 22:14:49,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:49,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:49,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:14:49,222 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1343902563, now seen corresponding path program 1 times [2021-11-02 22:14:49,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:49,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258467382] [2021-11-02 22:14:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:49,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 22:14:49,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:49,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258467382] [2021-11-02 22:14:49,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258467382] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:49,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251159087] [2021-11-02 22:14:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:49,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:49,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:14:49,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:14:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:50,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:14:50,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:14:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 22:14:51,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251159087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:51,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:14:51,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-02 22:14:51,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242545559] [2021-11-02 22:14:51,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:14:51,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:14:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:14:51,240 INFO L87 Difference]: Start difference. First operand 13569 states and 18349 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2021-11-02 22:14:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:51,881 INFO L93 Difference]: Finished difference Result 27110 states and 36674 transitions. [2021-11-02 22:14:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:14:51,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 128 [2021-11-02 22:14:51,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:51,995 INFO L225 Difference]: With dead ends: 27110 [2021-11-02 22:14:51,995 INFO L226 Difference]: Without dead ends: 13574 [2021-11-02 22:14:52,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:14:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2021-11-02 22:14:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 13574. [2021-11-02 22:14:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13552 states have (on average 1.3543388429752066) internal successors, (18354), 13573 states have internal predecessors, (18354), 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) [2021-11-02 22:14:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 18354 transitions. [2021-11-02 22:14:52,444 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 18354 transitions. Word has length 128 [2021-11-02 22:14:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:52,444 INFO L470 AbstractCegarLoop]: Abstraction has 13574 states and 18354 transitions. [2021-11-02 22:14:52,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2021-11-02 22:14:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 18354 transitions. [2021-11-02 22:14:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-02 22:14:52,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:52,449 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:52,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:14:52,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:14:52,662 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash -317588352, now seen corresponding path program 2 times [2021-11-02 22:14:52,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:52,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793989253] [2021-11-02 22:14:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:52,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 22:14:53,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:53,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793989253] [2021-11-02 22:14:53,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793989253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:53,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339511548] [2021-11-02 22:14:53,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:14:53,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:53,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:53,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:14:53,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:14:53,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:14:53,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:14:53,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:14:53,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:14:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 22:14:54,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339511548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:54,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:14:54,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-02 22:14:54,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997736258] [2021-11-02 22:14:54,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:14:54,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:14:54,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:14:54,300 INFO L87 Difference]: Start difference. First operand 13574 states and 18354 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2021-11-02 22:14:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:56,101 INFO L93 Difference]: Finished difference Result 62460 states and 84574 transitions. [2021-11-02 22:14:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:14:56,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 133 [2021-11-02 22:14:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:56,200 INFO L225 Difference]: With dead ends: 62460 [2021-11-02 22:14:56,200 INFO L226 Difference]: Without dead ends: 49082 [2021-11-02 22:14:56,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:14:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49082 states. [2021-11-02 22:14:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49082 to 13494. [2021-11-02 22:14:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13494 states, 13476 states have (on average 1.3532205402196498) internal successors, (18236), 13493 states have internal predecessors, (18236), 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) [2021-11-02 22:14:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13494 states to 13494 states and 18236 transitions. [2021-11-02 22:14:57,238 INFO L78 Accepts]: Start accepts. Automaton has 13494 states and 18236 transitions. Word has length 133 [2021-11-02 22:14:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:57,239 INFO L470 AbstractCegarLoop]: Abstraction has 13494 states and 18236 transitions. [2021-11-02 22:14:57,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2021-11-02 22:14:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 13494 states and 18236 transitions. [2021-11-02 22:14:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 22:14:57,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:57,243 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:57,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:14:57,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:57,458 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:14:57,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:57,459 INFO L85 PathProgramCache]: Analyzing trace with hash -676718706, now seen corresponding path program 1 times [2021-11-02 22:14:57,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:57,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279290091] [2021-11-02 22:14:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:57,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 22:14:57,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:57,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279290091] [2021-11-02 22:14:57,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279290091] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:57,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669328396] [2021-11-02 22:14:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:57,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:57,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:57,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:14:57,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:14:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:58,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:14:58,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:14:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 22:14:59,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669328396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:59,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:14:59,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-02 22:14:59,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667290939] [2021-11-02 22:14:59,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:14:59,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:14:59,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:14:59,219 INFO L87 Difference]: Start difference. First operand 13494 states and 18236 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 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) [2021-11-02 22:14:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:59,937 INFO L93 Difference]: Finished difference Result 26959 states and 36447 transitions. [2021-11-02 22:14:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:14:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 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 138 [2021-11-02 22:14:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:59,955 INFO L225 Difference]: With dead ends: 26959 [2021-11-02 22:14:59,956 INFO L226 Difference]: Without dead ends: 13499 [2021-11-02 22:14:59,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:14:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13499 states. [2021-11-02 22:15:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13499 to 13499. [2021-11-02 22:15:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 13481 states have (on average 1.3530895334174022) internal successors, (18241), 13498 states have internal predecessors, (18241), 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) [2021-11-02 22:15:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 18241 transitions. [2021-11-02 22:15:00,752 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 18241 transitions. Word has length 138 [2021-11-02 22:15:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:00,752 INFO L470 AbstractCegarLoop]: Abstraction has 13499 states and 18241 transitions. [2021-11-02 22:15:00,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 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) [2021-11-02 22:15:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 18241 transitions. [2021-11-02 22:15:00,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 22:15:00,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:00,756 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:00,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:15:00,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:00,958 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 22:15:00,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1890300309, now seen corresponding path program 2 times [2021-11-02 22:15:00,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:00,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613825999] [2021-11-02 22:15:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:00,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-02 22:15:01,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:01,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613825999] [2021-11-02 22:15:01,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613825999] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:01,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800565837] [2021-11-02 22:15:01,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:15:01,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:01,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:01,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:15:01,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b304532-ca25-405d-9cf3-a20363104304/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process