./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --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 32bit --witnessprinter.graph.data.programhash 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:08:48,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:08:48,457 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:08:48,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:08:48,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:08:48,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:08:48,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:08:48,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:08:48,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:08:48,499 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:08:48,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:08:48,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:08:48,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:08:48,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:08:48,501 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:08:48,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:08:48,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:08:48,503 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:08:48,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:08:48,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:08:48,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:08:48,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:08:48,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:08:48,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:08:48,509 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:08:48,509 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:08:48,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:08:48,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:08:48,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:08:48,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:08:48,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:08:48,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:08:48,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:48,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:08:48,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:08:48,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:08:48,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:08:48,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:08:48,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:08:48,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:08:48,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:08:48,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:08:48,519 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 [2024-10-31 22:08:48,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:08:48,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:08:48,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:08:48,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:08:48,964 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:08:48,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/seq-pthread/cs_szymanski.i Unable to find full path for "g++" [2024-10-31 22:08:51,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:08:51,723 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:08:51,724 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/sv-benchmarks/c/seq-pthread/cs_szymanski.i [2024-10-31 22:08:51,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/data/531e44df4/129bd7021ed540e68e3893dc57b1dbb2/FLAGb4e506f96 [2024-10-31 22:08:51,763 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/data/531e44df4/129bd7021ed540e68e3893dc57b1dbb2 [2024-10-31 22:08:51,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:08:51,768 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:08:51,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:51,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:08:51,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:08:51,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:51" (1/1) ... [2024-10-31 22:08:51,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df5562c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:51, skipping insertion in model container [2024-10-31 22:08:51,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:51" (1/1) ... [2024-10-31 22:08:51,869 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:08:52,331 WARN L251 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_04967c3f-471a-4f35-b161-1c547bd9298f/sv-benchmarks/c/seq-pthread/cs_szymanski.i[23606,23619] [2024-10-31 22:08:52,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:52,497 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:08:52,546 WARN L251 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_04967c3f-471a-4f35-b161-1c547bd9298f/sv-benchmarks/c/seq-pthread/cs_szymanski.i[23606,23619] [2024-10-31 22:08:52,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:52,681 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:08:52,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52 WrapperNode [2024-10-31 22:08:52,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:52,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:52,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:08:52,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:08:52,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,790 INFO L138 Inliner]: procedures = 145, calls = 298, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 409 [2024-10-31 22:08:52,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:52,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:08:52,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:08:52,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:08:52,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,856 INFO L175 MemorySlicer]: Split 144 memory accesses to 16 slices as follows [2, 0, 13, 8, 8, 8, 5, 29, 21, 7, 7, 7, 13, 5, 5, 6]. 20 percent of accesses are in the largest equivalence class. The 40 initializations are split as follows [2, 0, 0, 3, 3, 3, 0, 9, 9, 3, 3, 3, 0, 0, 0, 2]. The 36 writes are split as follows [0, 0, 1, 2, 2, 2, 1, 11, 6, 2, 2, 2, 1, 1, 1, 2]. [2024-10-31 22:08:52,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:08:52,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:08:52,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:08:52,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:08:52,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (1/1) ... [2024-10-31 22:08:52,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:52,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:08:52,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:08:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:08:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:08:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:08:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:08:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-31 22:08:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-31 22:08:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-31 22:08:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-31 22:08:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-31 22:08:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-31 22:08:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-31 22:08:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-31 22:08:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-10-31 22:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-10-31 22:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-10-31 22:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-10-31 22:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:08:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:08:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:08:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-31 22:08:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-31 22:08:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-31 22:08:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-31 22:08:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-31 22:08:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-31 22:08:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-31 22:08:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-31 22:08:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-10-31 22:08:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-10-31 22:08:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-10-31 22:08:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-10-31 22:08:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-31 22:08:53,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-31 22:08:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:08:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:08:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:08:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-31 22:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-31 22:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-31 22:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-31 22:08:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-10-31 22:08:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-10-31 22:08:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-10-31 22:08:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-10-31 22:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-10-31 22:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-10-31 22:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-10-31 22:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-10-31 22:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-10-31 22:08:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-10-31 22:08:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-10-31 22:08:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:08:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:08:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:08:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-31 22:08:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-31 22:08:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-31 22:08:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-31 22:08:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-10-31 22:08:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-10-31 22:08:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-10-31 22:08:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-10-31 22:08:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-10-31 22:08:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-10-31 22:08:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-10-31 22:08:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-10-31 22:08:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-10-31 22:08:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-10-31 22:08:53,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-10-31 22:08:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-10-31 22:08:53,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-10-31 22:08:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:08:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:08:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:08:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-31 22:08:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-31 22:08:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-31 22:08:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-31 22:08:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-10-31 22:08:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-10-31 22:08:53,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-10-31 22:08:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-10-31 22:08:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-10-31 22:08:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-10-31 22:08:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-10-31 22:08:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-10-31 22:08:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-10-31 22:08:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-10-31 22:08:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-10-31 22:08:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-10-31 22:08:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:08:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:08:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:08:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:08:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-31 22:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-31 22:08:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-31 22:08:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-31 22:08:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-31 22:08:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:08:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:08:53,451 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:08:53,454 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:08:58,202 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-10-31 22:08:58,202 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:08:58,223 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:08:58,227 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:08:58,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:58 BoogieIcfgContainer [2024-10-31 22:08:58,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:08:58,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:08:58,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:08:58,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:08:58,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:08:51" (1/3) ... [2024-10-31 22:08:58,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f99d711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:58, skipping insertion in model container [2024-10-31 22:08:58,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:52" (2/3) ... [2024-10-31 22:08:58,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f99d711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:58, skipping insertion in model container [2024-10-31 22:08:58,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:58" (3/3) ... [2024-10-31 22:08:58,242 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_szymanski.i [2024-10-31 22:08:58,258 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:08:58,259 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:08:58,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:08:58,343 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e1184ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:08:58,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:08:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 71 states have internal predecessors, (93), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-31 22:08:58,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-31 22:08:58,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:58,368 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:58,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:58,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash -290678459, now seen corresponding path program 1 times [2024-10-31 22:08:58,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:58,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598475575] [2024-10-31 22:08:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:58,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:08:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-31 22:08:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 22:08:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:08:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-31 22:08:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:08:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-31 22:08:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-31 22:08:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 22:08:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:08:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-31 22:08:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:08:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-31 22:08:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-31 22:08:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-31 22:08:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-31 22:08:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:08:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-31 22:08:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-31 22:08:59,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:59,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598475575] [2024-10-31 22:08:59,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598475575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:59,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:59,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:59,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055563325] [2024-10-31 22:08:59,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:59,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:08:59,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:59,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:08:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:59,423 INFO L87 Difference]: Start difference. First operand has 109 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 71 states have internal predecessors, (93), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-31 22:08:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:59,527 INFO L93 Difference]: Finished difference Result 220 states and 350 transitions. [2024-10-31 22:08:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:08:59,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 120 [2024-10-31 22:08:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:59,541 INFO L225 Difference]: With dead ends: 220 [2024-10-31 22:08:59,541 INFO L226 Difference]: Without dead ends: 109 [2024-10-31 22:08:59,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:59,556 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 4 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:59,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 297 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:08:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-31 22:08:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2024-10-31 22:08:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 68 states have internal predecessors, (86), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-31 22:08:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2024-10-31 22:08:59,628 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 120 [2024-10-31 22:08:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:59,628 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2024-10-31 22:08:59,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-31 22:08:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2024-10-31 22:08:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-31 22:08:59,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:59,638 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:59,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:08:59,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:59,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:59,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1184921249, now seen corresponding path program 1 times [2024-10-31 22:08:59,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:59,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421628943] [2024-10-31 22:08:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:59,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 22:09:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-31 22:09:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:09:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:09:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:09:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:09:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:09:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-31 22:09:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 22:09:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:09:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:09:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:09:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-31 22:09:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 22:09:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:09:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:09:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:09:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-31 22:09:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-31 22:09:00,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:00,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421628943] [2024-10-31 22:09:00,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421628943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:00,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:00,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778756997] [2024-10-31 22:09:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:00,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:00,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:00,161 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-31 22:09:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:00,214 INFO L93 Difference]: Finished difference Result 211 states and 300 transitions. [2024-10-31 22:09:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:00,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 123 [2024-10-31 22:09:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:00,219 INFO L225 Difference]: With dead ends: 211 [2024-10-31 22:09:00,219 INFO L226 Difference]: Without dead ends: 108 [2024-10-31 22:09:00,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:00,225 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:00,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 291 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-31 22:09:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-10-31 22:09:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 states have internal predecessors, (87), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-31 22:09:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 151 transitions. [2024-10-31 22:09:00,249 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 151 transitions. Word has length 123 [2024-10-31 22:09:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:00,249 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 151 transitions. [2024-10-31 22:09:00,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-31 22:09:00,250 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 151 transitions. [2024-10-31 22:09:00,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-31 22:09:00,256 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:00,256 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:00,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:09:00,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:00,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:00,257 INFO L85 PathProgramCache]: Analyzing trace with hash -722006623, now seen corresponding path program 1 times [2024-10-31 22:09:00,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499792356] [2024-10-31 22:09:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:00,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 22:09:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:09:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:09:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-31 22:09:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:09:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 22:09:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 22:09:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-31 22:09:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-31 22:09:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 22:09:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-31 22:09:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-31 22:09:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:09:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-31 22:09:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-31 22:09:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:09:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-31 22:09:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-31 22:09:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-31 22:09:00,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:00,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499792356] [2024-10-31 22:09:00,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499792356] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:00,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678080819] [2024-10-31 22:09:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:00,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:00,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:00,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:00,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:09:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:01,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:09:01,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-31 22:09:01,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-31 22:09:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678080819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:01,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:01,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-31 22:09:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313255641] [2024-10-31 22:09:01,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:01,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:09:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:01,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:09:01,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:09:01,514 INFO L87 Difference]: Start difference. First operand 107 states and 151 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-10-31 22:09:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:01,584 INFO L93 Difference]: Finished difference Result 215 states and 305 transitions. [2024-10-31 22:09:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:01,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 125 [2024-10-31 22:09:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:01,586 INFO L225 Difference]: With dead ends: 215 [2024-10-31 22:09:01,586 INFO L226 Difference]: Without dead ends: 111 [2024-10-31 22:09:01,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:09:01,588 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:01,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 579 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-10-31 22:09:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-10-31 22:09:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 73 states have internal predecessors, (91), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-31 22:09:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 155 transitions. [2024-10-31 22:09:01,599 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 155 transitions. Word has length 125 [2024-10-31 22:09:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:01,600 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 155 transitions. [2024-10-31 22:09:01,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-10-31 22:09:01,600 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 155 transitions. [2024-10-31 22:09:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-31 22:09:01,602 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:01,602 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:01,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:01,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:01,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:01,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:01,806 INFO L85 PathProgramCache]: Analyzing trace with hash 680926373, now seen corresponding path program 2 times [2024-10-31 22:09:01,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:01,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585617212] [2024-10-31 22:09:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-31 22:09:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:09:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:09:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:09:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:09:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:09:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-31 22:09:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 22:09:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:09:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:09:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:09:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-31 22:09:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 22:09:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:09:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:09:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:09:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-31 22:09:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-31 22:09:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-10-31 22:09:02,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:02,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585617212] [2024-10-31 22:09:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585617212] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:02,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332228546] [2024-10-31 22:09:02,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:02,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:02,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:02,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:02,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:09:02,744 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:09:02,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:02,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:09:02,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2024-10-31 22:09:03,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:09:03,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332228546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:03,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:09:03,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-31 22:09:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613410592] [2024-10-31 22:09:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:03,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:03,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:09:03,176 INFO L87 Difference]: Start difference. First operand 111 states and 155 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-31 22:09:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:03,236 INFO L93 Difference]: Finished difference Result 207 states and 296 transitions. [2024-10-31 22:09:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:09:03,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-10-31 22:09:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:03,245 INFO L225 Difference]: With dead ends: 207 [2024-10-31 22:09:03,245 INFO L226 Difference]: Without dead ends: 165 [2024-10-31 22:09:03,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:09:03,247 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 74 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:03,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 460 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-10-31 22:09:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-10-31 22:09:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 109 states have (on average 1.2844036697247707) internal successors, (140), 109 states have internal predecessors, (140), 45 states have call successors, (45), 10 states have call predecessors, (45), 10 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2024-10-31 22:09:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 234 transitions. [2024-10-31 22:09:03,291 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 234 transitions. Word has length 129 [2024-10-31 22:09:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:03,291 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 234 transitions. [2024-10-31 22:09:03,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-31 22:09:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 234 transitions. [2024-10-31 22:09:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-10-31 22:09:03,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:03,298 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 4, 4, 3, 3, 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] [2024-10-31 22:09:03,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:09:03,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:03,499 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:03,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash 42003111, now seen corresponding path program 1 times [2024-10-31 22:09:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:03,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052214758] [2024-10-31 22:09:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:09:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:09:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 22:09:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 22:09:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-31 22:09:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-31 22:09:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-31 22:09:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-31 22:09:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-31 22:09:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:09:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-31 22:09:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-31 22:09:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-31 22:09:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-31 22:09:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-31 22:09:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-31 22:09:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-31 22:09:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-31 22:09:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-31 22:09:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-31 22:09:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-31 22:09:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-31 22:09:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-31 22:09:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-31 22:09:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2024-10-31 22:09:04,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:04,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052214758] [2024-10-31 22:09:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052214758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408908694] [2024-10-31 22:09:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:04,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:04,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:04,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:04,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:09:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:04,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:09:04,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2024-10-31 22:09:05,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2024-10-31 22:09:05,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408908694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:05,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:05,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2024-10-31 22:09:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274837862] [2024-10-31 22:09:05,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:05,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:09:05,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:09:05,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:09:05,393 INFO L87 Difference]: Start difference. First operand 165 states and 234 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2024-10-31 22:09:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:07,123 INFO L93 Difference]: Finished difference Result 346 states and 490 transitions. [2024-10-31 22:09:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:09:07,124 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 198 [2024-10-31 22:09:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:07,126 INFO L225 Difference]: With dead ends: 346 [2024-10-31 22:09:07,127 INFO L226 Difference]: Without dead ends: 193 [2024-10-31 22:09:07,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:09:07,128 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 62 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:07,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 350 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-31 22:09:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-31 22:09:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2024-10-31 22:09:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.2538461538461538) internal successors, (163), 132 states have internal predecessors, (163), 45 states have call successors, (45), 10 states have call predecessors, (45), 12 states have return successors, (53), 45 states have call predecessors, (53), 45 states have call successors, (53) [2024-10-31 22:09:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 261 transitions. [2024-10-31 22:09:07,155 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 261 transitions. Word has length 198 [2024-10-31 22:09:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:07,155 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 261 transitions. [2024-10-31 22:09:07,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2024-10-31 22:09:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 261 transitions. [2024-10-31 22:09:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-10-31 22:09:07,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:07,177 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-10-31 22:09:07,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:09:07,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04967c3f-471a-4f35-b161-1c547bd9298f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:07,378 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:07,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash -655474905, now seen corresponding path program 2 times [2024-10-31 22:09:07,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:07,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415501746] [2024-10-31 22:09:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:09:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:09:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 22:09:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 22:09:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-31 22:09:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-31 22:09:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:09:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-31 22:09:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-31 22:09:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-31 22:09:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-31 22:09:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-31 22:09:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-31 22:09:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-31 22:09:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-31 22:09:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-31 22:09:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-31 22:09:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-31 22:09:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-31 22:09:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-31 22:09:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-31 22:09:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-31 22:09:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-31 22:09:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-31 22:09:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2024-10-31 22:09:08,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:08,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415501746] [2024-10-31 22:09:08,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415501746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:08,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:08,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:09:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592323496] [2024-10-31 22:09:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:08,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:09:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:08,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:09:08,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:09:08,747 INFO L87 Difference]: Start difference. First operand 188 states and 261 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-10-31 22:09:12,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-31 22:09:16,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-31 22:09:20,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-31 22:09:24,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []