./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c --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_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/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_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/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_e904bd7b-8036-4796-b4c1-a946236b1db1/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 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:12:00,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:12:00,699 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:12:00,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:12:00,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:12:00,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:12:00,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:12:00,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:12:00,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:12:00,747 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:12:00,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:12:00,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:12:00,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:12:00,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:12:00,751 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:12:00,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:12:00,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:12:00,752 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:12:00,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:12:00,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:12:00,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:12:00,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:12:00,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:12:00,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:12:00,758 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:12:00,758 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:12:00,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:12:00,759 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:12:00,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:12:00,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:12:00,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:12:00,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:12:00,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:00,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:12:00,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:12:00,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:12:00,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:12:00,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:12:00,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:12:00,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:12:00,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:12:00,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:12:00,765 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_e904bd7b-8036-4796-b4c1-a946236b1db1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 [2024-10-31 22:12:01,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:12:01,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:12:01,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:12:01,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:12:01,133 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:12:01,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c Unable to find full path for "g++" [2024-10-31 22:12:03,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:12:03,455 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:12:03,456 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-10-31 22:12:03,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/data/6162fc9a7/cd15dd5a09a04a28b760717c69ed4a84/FLAG62ec749ae [2024-10-31 22:12:03,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/data/6162fc9a7/cd15dd5a09a04a28b760717c69ed4a84 [2024-10-31 22:12:03,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:12:03,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:12:03,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:03,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:12:03,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:12:03,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:03" (1/1) ... [2024-10-31 22:12:03,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706cfb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:03, skipping insertion in model container [2024-10-31 22:12:03,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:03" (1/1) ... [2024-10-31 22:12:03,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:12:04,041 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_e904bd7b-8036-4796-b4c1-a946236b1db1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2024-10-31 22:12:04,117 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_e904bd7b-8036-4796-b4c1-a946236b1db1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2024-10-31 22:12:04,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:04,264 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:12:04,279 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_e904bd7b-8036-4796-b4c1-a946236b1db1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2024-10-31 22:12:04,307 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_e904bd7b-8036-4796-b4c1-a946236b1db1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2024-10-31 22:12:04,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:04,426 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:12:04,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04 WrapperNode [2024-10-31 22:12:04,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:04,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:04,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:12:04,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:12:04,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,498 INFO L138 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 714 [2024-10-31 22:12:04,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:04,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:12:04,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:12:04,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:12:04,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,536 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:12:04,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:12:04,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:12:04,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:12:04,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:12:04,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (1/1) ... [2024-10-31 22:12:04,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:04,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:04,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:12:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:12:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:12:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:12:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-31 22:12:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-31 22:12:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-31 22:12:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-31 22:12:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-31 22:12:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-31 22:12:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-31 22:12:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-31 22:12:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-31 22:12:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-31 22:12:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-31 22:12:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-31 22:12:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-31 22:12:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-31 22:12:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-31 22:12:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-31 22:12:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-31 22:12:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-31 22:12:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-31 22:12:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-31 22:12:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:12:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-31 22:12:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-31 22:12:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-31 22:12:04,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-31 22:12:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:12:04,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:12:04,659 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-31 22:12:04,659 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-31 22:12:04,659 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-31 22:12:04,659 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-31 22:12:04,784 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:04,787 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:05,749 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2024-10-31 22:12:05,750 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:05,785 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:05,788 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-10-31 22:12:05,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:05 BoogieIcfgContainer [2024-10-31 22:12:05,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:05,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:12:05,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:12:05,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:12:05,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:12:03" (1/3) ... [2024-10-31 22:12:05,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d4133a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:05, skipping insertion in model container [2024-10-31 22:12:05,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:04" (2/3) ... [2024-10-31 22:12:05,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d4133a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:05, skipping insertion in model container [2024-10-31 22:12:05,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:05" (3/3) ... [2024-10-31 22:12:05,800 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-10-31 22:12:05,814 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:12:05,815 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:12:05,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:05,906 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;@1bfa7a45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:05,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:12:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 294 states have (on average 1.598639455782313) internal successors, (470), 302 states have internal predecessors, (470), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-31 22:12:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:12:05,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:05,936 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:05,937 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:05,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1937150767, now seen corresponding path program 1 times [2024-10-31 22:12:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435561598] [2024-10-31 22:12:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:06,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:06,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435561598] [2024-10-31 22:12:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435561598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:06,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:06,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:12:06,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424953107] [2024-10-31 22:12:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:06,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:12:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:06,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:12:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:12:06,677 INFO L87 Difference]: Start difference. First operand has 348 states, 294 states have (on average 1.598639455782313) internal successors, (470), 302 states have internal predecessors, (470), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:08,312 INFO L93 Difference]: Finished difference Result 808 states and 1254 transitions. [2024-10-31 22:12:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:12:08,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-10-31 22:12:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:08,330 INFO L225 Difference]: With dead ends: 808 [2024-10-31 22:12:08,330 INFO L226 Difference]: Without dead ends: 472 [2024-10-31 22:12:08,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:12:08,342 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 856 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:08,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1522 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:12:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-10-31 22:12:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 433. [2024-10-31 22:12:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 362 states have (on average 1.4834254143646408) internal successors, (537), 369 states have internal predecessors, (537), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2024-10-31 22:12:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 632 transitions. [2024-10-31 22:12:08,490 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 632 transitions. Word has length 65 [2024-10-31 22:12:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:08,491 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 632 transitions. [2024-10-31 22:12:08,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 632 transitions. [2024-10-31 22:12:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:12:08,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:08,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:08,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:12:08,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:08,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash -258262127, now seen corresponding path program 1 times [2024-10-31 22:12:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:08,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268256317] [2024-10-31 22:12:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:08,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268256317] [2024-10-31 22:12:08,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268256317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:08,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:08,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:12:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744461490] [2024-10-31 22:12:08,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:08,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:12:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:12:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:12:08,882 INFO L87 Difference]: Start difference. First operand 433 states and 632 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:10,497 INFO L93 Difference]: Finished difference Result 780 states and 1109 transitions. [2024-10-31 22:12:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:12:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-10-31 22:12:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:10,502 INFO L225 Difference]: With dead ends: 780 [2024-10-31 22:12:10,503 INFO L226 Difference]: Without dead ends: 603 [2024-10-31 22:12:10,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:12:10,505 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 964 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:10,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1757 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:12:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-10-31 22:12:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 529. [2024-10-31 22:12:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 438 states have (on average 1.4634703196347032) internal successors, (641), 447 states have internal predecessors, (641), 58 states have call successors, (58), 29 states have call predecessors, (58), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2024-10-31 22:12:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 766 transitions. [2024-10-31 22:12:10,587 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 766 transitions. Word has length 65 [2024-10-31 22:12:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:10,589 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 766 transitions. [2024-10-31 22:12:10,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 766 transitions. [2024-10-31 22:12:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:12:10,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:10,595 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:10,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:12:10,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:10,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2008119059, now seen corresponding path program 1 times [2024-10-31 22:12:10,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820450806] [2024-10-31 22:12:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:10,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820450806] [2024-10-31 22:12:10,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820450806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:10,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:10,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:12:10,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574281588] [2024-10-31 22:12:10,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:10,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:12:10,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:12:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:12:10,914 INFO L87 Difference]: Start difference. First operand 529 states and 766 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 22:12:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:13,394 INFO L93 Difference]: Finished difference Result 2224 states and 3121 transitions. [2024-10-31 22:12:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-31 22:12:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2024-10-31 22:12:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:13,411 INFO L225 Difference]: With dead ends: 2224 [2024-10-31 22:12:13,411 INFO L226 Difference]: Without dead ends: 1957 [2024-10-31 22:12:13,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2024-10-31 22:12:13,422 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 2313 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:13,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 1651 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-31 22:12:13,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2024-10-31 22:12:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1664. [2024-10-31 22:12:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1334 states have (on average 1.371064467766117) internal successors, (1829), 1363 states have internal predecessors, (1829), 175 states have call successors, (175), 131 states have call predecessors, (175), 153 states have return successors, (251), 173 states have call predecessors, (251), 171 states have call successors, (251) [2024-10-31 22:12:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2255 transitions. [2024-10-31 22:12:13,646 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2255 transitions. Word has length 65 [2024-10-31 22:12:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:13,646 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2255 transitions. [2024-10-31 22:12:13,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 22:12:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2255 transitions. [2024-10-31 22:12:13,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:12:13,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:13,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:13,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:12:13,651 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:13,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1235399148, now seen corresponding path program 1 times [2024-10-31 22:12:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:13,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696933007] [2024-10-31 22:12:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:13,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:13,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696933007] [2024-10-31 22:12:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696933007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:13,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:13,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:12:13,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074622343] [2024-10-31 22:12:13,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:13,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:12:13,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:13,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:12:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:12:13,856 INFO L87 Difference]: Start difference. First operand 1664 states and 2255 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:12:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:15,289 INFO L93 Difference]: Finished difference Result 3324 states and 4505 transitions. [2024-10-31 22:12:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:12:15,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-10-31 22:12:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:15,302 INFO L225 Difference]: With dead ends: 3324 [2024-10-31 22:12:15,303 INFO L226 Difference]: Without dead ends: 1922 [2024-10-31 22:12:15,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:12:15,310 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 413 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:15,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2035 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 22:12:15,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2024-10-31 22:12:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1709. [2024-10-31 22:12:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1370 states have (on average 1.3547445255474453) internal successors, (1856), 1399 states have internal predecessors, (1856), 175 states have call successors, (175), 131 states have call predecessors, (175), 162 states have return successors, (263), 182 states have call predecessors, (263), 171 states have call successors, (263) [2024-10-31 22:12:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2294 transitions. [2024-10-31 22:12:15,475 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2294 transitions. Word has length 65 [2024-10-31 22:12:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:15,476 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2294 transitions. [2024-10-31 22:12:15,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:12:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2294 transitions. [2024-10-31 22:12:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:12:15,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:15,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:15,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:12:15,479 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:15,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash 150804246, now seen corresponding path program 1 times [2024-10-31 22:12:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:15,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76018577] [2024-10-31 22:12:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:15,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76018577] [2024-10-31 22:12:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76018577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:15,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:15,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:12:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618647900] [2024-10-31 22:12:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:15,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:12:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:12:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:12:15,735 INFO L87 Difference]: Start difference. First operand 1709 states and 2294 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:17,330 INFO L93 Difference]: Finished difference Result 3241 states and 4294 transitions. [2024-10-31 22:12:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:12:17,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-10-31 22:12:17,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:17,344 INFO L225 Difference]: With dead ends: 3241 [2024-10-31 22:12:17,345 INFO L226 Difference]: Without dead ends: 2014 [2024-10-31 22:12:17,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-10-31 22:12:17,350 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 982 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:17,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1481 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 22:12:17,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2024-10-31 22:12:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1687. [2024-10-31 22:12:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1356 states have (on average 1.351032448377581) internal successors, (1832), 1379 states have internal predecessors, (1832), 175 states have call successors, (175), 131 states have call predecessors, (175), 154 states have return successors, (247), 180 states have call predecessors, (247), 171 states have call successors, (247) [2024-10-31 22:12:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2254 transitions. [2024-10-31 22:12:17,567 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2254 transitions. Word has length 65 [2024-10-31 22:12:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:17,568 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2254 transitions. [2024-10-31 22:12:17,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2254 transitions. [2024-10-31 22:12:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:12:17,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:17,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:17,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:12:17,571 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:17,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 16790740, now seen corresponding path program 1 times [2024-10-31 22:12:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459567803] [2024-10-31 22:12:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:17,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:17,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:17,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459567803] [2024-10-31 22:12:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459567803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:17,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:12:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952864761] [2024-10-31 22:12:17,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:17,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:12:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:17,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:12:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:17,735 INFO L87 Difference]: Start difference. First operand 1687 states and 2254 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:18,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:18,881 INFO L93 Difference]: Finished difference Result 4825 states and 6368 transitions. [2024-10-31 22:12:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:12:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-10-31 22:12:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:18,900 INFO L225 Difference]: With dead ends: 4825 [2024-10-31 22:12:18,901 INFO L226 Difference]: Without dead ends: 3403 [2024-10-31 22:12:18,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:12:18,907 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 1179 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:18,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1017 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:12:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2024-10-31 22:12:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3131. [2024-10-31 22:12:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2469 states have (on average 1.3017415957877683) internal successors, (3214), 2521 states have internal predecessors, (3214), 340 states have call successors, (340), 254 states have call predecessors, (340), 320 states have return successors, (574), 362 states have call predecessors, (574), 336 states have call successors, (574) [2024-10-31 22:12:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4128 transitions. [2024-10-31 22:12:19,257 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4128 transitions. Word has length 65 [2024-10-31 22:12:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:19,258 INFO L471 AbstractCegarLoop]: Abstraction has 3131 states and 4128 transitions. [2024-10-31 22:12:19,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:12:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4128 transitions. [2024-10-31 22:12:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-31 22:12:19,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:19,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:19,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:12:19,264 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:19,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1203450812, now seen corresponding path program 1 times [2024-10-31 22:12:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:19,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341586777] [2024-10-31 22:12:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:19,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341586777] [2024-10-31 22:12:19,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341586777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:19,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:19,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:12:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540990434] [2024-10-31 22:12:19,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:19,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:19,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:19,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:19,364 INFO L87 Difference]: Start difference. First operand 3131 states and 4128 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:12:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:20,895 INFO L93 Difference]: Finished difference Result 8363 states and 11038 transitions. [2024-10-31 22:12:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:12:20,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-10-31 22:12:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:20,926 INFO L225 Difference]: With dead ends: 8363 [2024-10-31 22:12:20,926 INFO L226 Difference]: Without dead ends: 5476 [2024-10-31 22:12:20,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:12:20,935 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 585 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:20,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1247 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:12:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2024-10-31 22:12:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 4843. [2024-10-31 22:12:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4843 states, 3775 states have (on average 1.2863576158940397) internal successors, (4856), 3837 states have internal predecessors, (4856), 542 states have call successors, (542), 428 states have call predecessors, (542), 524 states have return successors, (926), 584 states have call predecessors, (926), 538 states have call successors, (926) [2024-10-31 22:12:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 6324 transitions. [2024-10-31 22:12:21,478 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 6324 transitions. Word has length 66 [2024-10-31 22:12:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:21,479 INFO L471 AbstractCegarLoop]: Abstraction has 4843 states and 6324 transitions. [2024-10-31 22:12:21,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:12:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 6324 transitions. [2024-10-31 22:12:21,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-31 22:12:21,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:21,483 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:21,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:12:21,483 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:21,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash 503586546, now seen corresponding path program 1 times [2024-10-31 22:12:21,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:21,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918045978] [2024-10-31 22:12:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:21,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918045978] [2024-10-31 22:12:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918045978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:21,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:12:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688337440] [2024-10-31 22:12:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:21,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:12:21,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:12:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:21,633 INFO L87 Difference]: Start difference. First operand 4843 states and 6324 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-31 22:12:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:23,269 INFO L93 Difference]: Finished difference Result 6638 states and 8594 transitions. [2024-10-31 22:12:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:12:23,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-10-31 22:12:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:23,306 INFO L225 Difference]: With dead ends: 6638 [2024-10-31 22:12:23,306 INFO L226 Difference]: Without dead ends: 6635 [2024-10-31 22:12:23,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:12:23,310 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 1430 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:23,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1039 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:12:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2024-10-31 22:12:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 5920. [2024-10-31 22:12:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5920 states, 4593 states have (on average 1.2747659481820162) internal successors, (5855), 4665 states have internal predecessors, (5855), 673 states have call successors, (673), 542 states have call predecessors, (673), 652 states have return successors, (1134), 719 states have call predecessors, (1134), 670 states have call successors, (1134) [2024-10-31 22:12:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 7662 transitions. [2024-10-31 22:12:24,060 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 7662 transitions. Word has length 73 [2024-10-31 22:12:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:12:24,061 INFO L471 AbstractCegarLoop]: Abstraction has 5920 states and 7662 transitions. [2024-10-31 22:12:24,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-31 22:12:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 7662 transitions. [2024-10-31 22:12:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-31 22:12:24,065 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:12:24,065 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:24,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:12:24,065 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:12:24,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1569714267, now seen corresponding path program 1 times [2024-10-31 22:12:24,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:24,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676662064] [2024-10-31 22:12:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:12:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:12:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:12:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:12:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:12:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:12:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:12:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:24,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676662064] [2024-10-31 22:12:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676662064] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827739751] [2024-10-31 22:12:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:24,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:24,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:24,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:24,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e904bd7b-8036-4796-b4c1-a946236b1db1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:12:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:24,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:12:24,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:24,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:24,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827739751] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:12:24,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:12:24,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-10-31 22:12:24,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877425254] [2024-10-31 22:12:24,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:12:24,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:12:24,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:12:24,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:12:24,972 INFO L87 Difference]: Start difference. First operand 5920 states and 7662 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-31 22:12:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:12:28,511 INFO L93 Difference]: Finished difference Result 13990 states and 17941 transitions. [2024-10-31 22:12:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-31 22:12:28,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-10-31 22:12:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:12:28,585 INFO L225 Difference]: With dead ends: 13990 [2024-10-31 22:12:28,585 INFO L226 Difference]: Without dead ends: 13987 [2024-10-31 22:12:28,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-10-31 22:12:28,592 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 1442 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:12:28,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1938 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:12:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13987 states.