./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/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_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/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_751e9bf8-289a-470f-b5c4-1855df4b2b2f/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 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:15:53,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:15:53,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:15:53,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:15:53,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:15:53,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:15:53,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:15:53,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:15:53,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:15:53,602 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:15:53,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:15:53,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:15:53,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:15:53,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:15:53,608 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:15:53,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:15:53,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:15:53,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:15:53,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:15:53,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:15:53,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:15:53,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:15:53,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:15:53,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:15:53,616 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:15:53,616 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:15:53,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:15:53,617 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:15:53,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:15:53,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:15:53,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:15:53,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:15:53,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:53,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:15:53,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:15:53,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:15:53,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:15:53,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:15:53,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:15:53,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:15:53,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:15:53,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:15:53,622 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_751e9bf8-289a-470f-b5c4-1855df4b2b2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 [2024-10-31 22:15:53,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:15:53,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:15:53,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:15:53,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:15:53,956 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:15:53,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c Unable to find full path for "g++" [2024-10-31 22:15:56,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:56,437 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:56,437 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2024-10-31 22:15:56,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/data/c95900052/764e0ff21caf4d61b5ef4f46b4636405/FLAG1f35cfbf3 [2024-10-31 22:15:56,671 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/data/c95900052/764e0ff21caf4d61b5ef4f46b4636405 [2024-10-31 22:15:56,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:56,675 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:56,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:56,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:56,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:56,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:56" (1/1) ... [2024-10-31 22:15:56,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224eaf7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:56, skipping insertion in model container [2024-10-31 22:15:56,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:56" (1/1) ... [2024-10-31 22:15:56,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:15:56,981 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_751e9bf8-289a-470f-b5c4-1855df4b2b2f/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2024-10-31 22:15:57,054 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_751e9bf8-289a-470f-b5c4-1855df4b2b2f/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2024-10-31 22:15:57,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:57,246 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:15:57,258 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_751e9bf8-289a-470f-b5c4-1855df4b2b2f/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2024-10-31 22:15:57,285 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_751e9bf8-289a-470f-b5c4-1855df4b2b2f/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2024-10-31 22:15:57,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:57,412 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:15:57,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57 WrapperNode [2024-10-31 22:15:57,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:57,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:57,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:15:57,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:15:57,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,526 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1023 [2024-10-31 22:15:57,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:57,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:15:57,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:15:57,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:15:57,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,554 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,576 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 22:15:57,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:15:57,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:15:57,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:15:57,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:15:57,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (1/1) ... [2024-10-31 22:15:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:57,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:57,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:15:57,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:15:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:15:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:15:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:15:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-31 22:15:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-31 22:15:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-31 22:15:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-31 22:15:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-31 22:15:57,742 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-31 22:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-31 22:15:57,742 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-31 22:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-31 22:15:57,742 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-31 22:15:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-31 22:15:57,743 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-31 22:15:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:15:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-31 22:15:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-31 22:15:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:15:57,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:15:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-31 22:15:57,745 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-31 22:15:57,967 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:15:57,972 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:59,366 INFO L? ?]: Removed 121 outVars from TransFormulas that were not future-live. [2024-10-31 22:15:59,366 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:59,392 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:59,392 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-10-31 22:15:59,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:59 BoogieIcfgContainer [2024-10-31 22:15:59,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:59,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:59,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:59,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:59,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:56" (1/3) ... [2024-10-31 22:15:59,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a61b8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:59, skipping insertion in model container [2024-10-31 22:15:59,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:57" (2/3) ... [2024-10-31 22:15:59,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a61b8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:59, skipping insertion in model container [2024-10-31 22:15:59,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:59" (3/3) ... [2024-10-31 22:15:59,402 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2024-10-31 22:15:59,421 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:59,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:15:59,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:59,516 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;@6e8db992, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:59,517 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:15:59,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 398 states have (on average 1.6256281407035176) internal successors, (647), 403 states have internal predecessors, (647), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-31 22:15:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-31 22:15:59,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:59,537 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] [2024-10-31 22:15:59,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:59,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1310010662, now seen corresponding path program 1 times [2024-10-31 22:15:59,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:59,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341397876] [2024-10-31 22:15:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:59,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:59,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:15:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:00,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:16:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:00,052 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 22:16:00,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:00,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341397876] [2024-10-31 22:16:00,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341397876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:00,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:00,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330700094] [2024-10-31 22:16:00,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:00,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:00,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:00,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:00,110 INFO L87 Difference]: Start difference. First operand has 441 states, 398 states have (on average 1.6256281407035176) internal successors, (647), 403 states have internal predecessors, (647), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:16:01,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:01,113 INFO L93 Difference]: Finished difference Result 928 states and 1488 transitions. [2024-10-31 22:16:01,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:01,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-10-31 22:16:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:01,133 INFO L225 Difference]: With dead ends: 928 [2024-10-31 22:16:01,133 INFO L226 Difference]: Without dead ends: 501 [2024-10-31 22:16:01,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:01,146 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 895 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:01,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 830 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:16:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-10-31 22:16:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 495. [2024-10-31 22:16:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 447 states have (on average 1.512304250559284) internal successors, (676), 451 states have internal predecessors, (676), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2024-10-31 22:16:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 750 transitions. [2024-10-31 22:16:01,271 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 750 transitions. Word has length 44 [2024-10-31 22:16:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:01,272 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 750 transitions. [2024-10-31 22:16:01,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:16:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 750 transitions. [2024-10-31 22:16:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-31 22:16:01,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:01,276 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] [2024-10-31 22:16:01,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:16:01,277 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:01,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1602452412, now seen corresponding path program 1 times [2024-10-31 22:16:01,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:01,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016880160] [2024-10-31 22:16:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:01,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:01,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-31 22:16:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:01,422 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 22:16:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:01,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016880160] [2024-10-31 22:16:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016880160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943583616] [2024-10-31 22:16:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:01,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:01,435 INFO L87 Difference]: Start difference. First operand 495 states and 750 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:16:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:02,267 INFO L93 Difference]: Finished difference Result 743 states and 1090 transitions. [2024-10-31 22:16:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:02,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-10-31 22:16:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:02,273 INFO L225 Difference]: With dead ends: 743 [2024-10-31 22:16:02,273 INFO L226 Difference]: Without dead ends: 619 [2024-10-31 22:16:02,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:02,276 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 349 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:02,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1150 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:16:02,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-10-31 22:16:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 562. [2024-10-31 22:16:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 508 states have (on average 1.4960629921259843) internal successors, (760), 512 states have internal predecessors, (760), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-10-31 22:16:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 840 transitions. [2024-10-31 22:16:02,325 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 840 transitions. Word has length 45 [2024-10-31 22:16:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:02,325 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 840 transitions. [2024-10-31 22:16:02,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:16:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 840 transitions. [2024-10-31 22:16:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-31 22:16:02,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:02,328 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] [2024-10-31 22:16:02,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:16:02,329 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:02,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash 318094951, now seen corresponding path program 1 times [2024-10-31 22:16:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763905929] [2024-10-31 22:16:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:02,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:02,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-31 22:16:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:02,431 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 22:16:02,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:02,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763905929] [2024-10-31 22:16:02,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763905929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:02,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:02,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695040830] [2024-10-31 22:16:02,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:02,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:02,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:02,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:02,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:02,435 INFO L87 Difference]: Start difference. First operand 562 states and 840 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:16:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:03,067 INFO L93 Difference]: Finished difference Result 970 states and 1399 transitions. [2024-10-31 22:16:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:03,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-10-31 22:16:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:03,074 INFO L225 Difference]: With dead ends: 970 [2024-10-31 22:16:03,074 INFO L226 Difference]: Without dead ends: 779 [2024-10-31 22:16:03,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:03,077 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 905 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:03,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 827 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:16:03,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-10-31 22:16:03,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 727. [2024-10-31 22:16:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 654 states have (on average 1.452599388379205) internal successors, (950), 661 states have internal predecessors, (950), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2024-10-31 22:16:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1058 transitions. [2024-10-31 22:16:03,144 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1058 transitions. Word has length 45 [2024-10-31 22:16:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:03,145 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1058 transitions. [2024-10-31 22:16:03,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:16:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1058 transitions. [2024-10-31 22:16:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:16:03,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:03,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:03,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:16:03,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:03,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1128549878, now seen corresponding path program 1 times [2024-10-31 22:16:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:03,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818800878] [2024-10-31 22:16:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:03,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:03,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:03,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:16:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:03,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:16:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:16:03,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:03,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818800878] [2024-10-31 22:16:03,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818800878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:03,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:03,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:03,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370913278] [2024-10-31 22:16:03,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:03,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:03,292 INFO L87 Difference]: Start difference. First operand 727 states and 1058 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:16:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:04,142 INFO L93 Difference]: Finished difference Result 1311 states and 1843 transitions. [2024-10-31 22:16:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-10-31 22:16:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:04,151 INFO L225 Difference]: With dead ends: 1311 [2024-10-31 22:16:04,152 INFO L226 Difference]: Without dead ends: 955 [2024-10-31 22:16:04,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:04,159 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 333 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:04,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1203 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:16:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-10-31 22:16:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 917. [2024-10-31 22:16:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 820 states have (on average 1.4024390243902438) internal successors, (1150), 829 states have internal predecessors, (1150), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2024-10-31 22:16:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1296 transitions. [2024-10-31 22:16:04,249 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1296 transitions. Word has length 62 [2024-10-31 22:16:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:04,250 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1296 transitions. [2024-10-31 22:16:04,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:16:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1296 transitions. [2024-10-31 22:16:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 22:16:04,253 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:04,253 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:04,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:16:04,254 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:04,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1854546651, now seen corresponding path program 1 times [2024-10-31 22:16:04,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:04,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415408536] [2024-10-31 22:16:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:04,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:04,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:04,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:16:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:04,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:16:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-31 22:16:04,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:04,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415408536] [2024-10-31 22:16:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415408536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:04,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900794975] [2024-10-31 22:16:04,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:04,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:04,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:04,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:04,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:04,382 INFO L87 Difference]: Start difference. First operand 917 states and 1296 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:16:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:05,038 INFO L93 Difference]: Finished difference Result 1570 states and 2149 transitions. [2024-10-31 22:16:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:05,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-10-31 22:16:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:05,045 INFO L225 Difference]: With dead ends: 1570 [2024-10-31 22:16:05,046 INFO L226 Difference]: Without dead ends: 1116 [2024-10-31 22:16:05,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:05,049 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 892 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:05,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 826 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:16:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2024-10-31 22:16:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1061. [2024-10-31 22:16:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 948 states have (on average 1.3723628691983123) internal successors, (1301), 959 states have internal predecessors, (1301), 71 states have call successors, (71), 35 states have call predecessors, (71), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2024-10-31 22:16:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1469 transitions. [2024-10-31 22:16:05,127 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1469 transitions. Word has length 67 [2024-10-31 22:16:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:05,128 INFO L471 AbstractCegarLoop]: Abstraction has 1061 states and 1469 transitions. [2024-10-31 22:16:05,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:16:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1469 transitions. [2024-10-31 22:16:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-31 22:16:05,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:05,131 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:05,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:16:05,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:05,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2014410227, now seen corresponding path program 1 times [2024-10-31 22:16:05,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:05,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45409472] [2024-10-31 22:16:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:05,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:05,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:16:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:05,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:16:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:16:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45409472] [2024-10-31 22:16:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45409472] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:16:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966752202] [2024-10-31 22:16:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:05,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:05,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:05,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:16:05,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:16:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:05,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:16:05,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:16:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:05,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:16:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:16:05,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966752202] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:16:05,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:16:05,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-10-31 22:16:05,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119759757] [2024-10-31 22:16:05,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:05,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:05,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:16:05,731 INFO L87 Difference]: Start difference. First operand 1061 states and 1469 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:16:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:05,989 INFO L93 Difference]: Finished difference Result 1117 states and 1537 transitions. [2024-10-31 22:16:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:16:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-10-31 22:16:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:05,997 INFO L225 Difference]: With dead ends: 1117 [2024-10-31 22:16:05,997 INFO L226 Difference]: Without dead ends: 1114 [2024-10-31 22:16:05,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:16:06,001 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 1205 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:06,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 750 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:16:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-10-31 22:16:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1060. [2024-10-31 22:16:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 948 states have (on average 1.370253164556962) internal successors, (1299), 958 states have internal predecessors, (1299), 70 states have call successors, (70), 35 states have call predecessors, (70), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2024-10-31 22:16:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1466 transitions. [2024-10-31 22:16:06,074 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1466 transitions. Word has length 68 [2024-10-31 22:16:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:06,075 INFO L471 AbstractCegarLoop]: Abstraction has 1060 states and 1466 transitions. [2024-10-31 22:16:06,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:16:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1466 transitions. [2024-10-31 22:16:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-31 22:16:06,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:06,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:06,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:16:06,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:06,279 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:06,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:06,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1976461096, now seen corresponding path program 1 times [2024-10-31 22:16:06,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:06,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877165586] [2024-10-31 22:16:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:06,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:06,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:06,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:16:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:06,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:16:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:16:06,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:06,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877165586] [2024-10-31 22:16:06,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877165586] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:16:06,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663325352] [2024-10-31 22:16:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:06,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:06,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:06,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:16:06,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:16:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:06,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:16:06,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:16:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:06,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:16:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:16:07,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663325352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:16:07,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:16:07,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-10-31 22:16:07,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563993912] [2024-10-31 22:16:07,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:16:07,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:16:07,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:16:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:16:07,092 INFO L87 Difference]: Start difference. First operand 1060 states and 1466 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-31 22:16:09,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:09,445 INFO L93 Difference]: Finished difference Result 2567 states and 3454 transitions. [2024-10-31 22:16:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-31 22:16:09,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-10-31 22:16:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:09,457 INFO L225 Difference]: With dead ends: 2567 [2024-10-31 22:16:09,462 INFO L226 Difference]: Without dead ends: 2023 [2024-10-31 22:16:09,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-10-31 22:16:09,466 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 1106 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:09,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 3625 Invalid, 2414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-31 22:16:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2024-10-31 22:16:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1423. [2024-10-31 22:16:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1272 states have (on average 1.3356918238993711) internal successors, (1699), 1290 states have internal predecessors, (1699), 90 states have call successors, (90), 49 states have call predecessors, (90), 59 states have return successors, (131), 84 states have call predecessors, (131), 89 states have call successors, (131) [2024-10-31 22:16:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1920 transitions. [2024-10-31 22:16:09,586 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1920 transitions. Word has length 69 [2024-10-31 22:16:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:09,591 INFO L471 AbstractCegarLoop]: Abstraction has 1423 states and 1920 transitions. [2024-10-31 22:16:09,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-31 22:16:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1920 transitions. [2024-10-31 22:16:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-31 22:16:09,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:09,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:09,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:16:09,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:16:09,797 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:09,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1614310800, now seen corresponding path program 1 times [2024-10-31 22:16:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:09,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133281042] [2024-10-31 22:16:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:09,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:09,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:16:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:09,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:16:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:09,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 22:16:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-31 22:16:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133281042] [2024-10-31 22:16:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133281042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:16:09,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810642684] [2024-10-31 22:16:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:09,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:09,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:16:09,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:16:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:16:10,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:16:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:16:10,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:16:10,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810642684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:10,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:16:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-31 22:16:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852210564] [2024-10-31 22:16:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:10,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:16:10,134 INFO L87 Difference]: Start difference. First operand 1423 states and 1920 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:16:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:10,217 INFO L93 Difference]: Finished difference Result 2120 states and 2824 transitions. [2024-10-31 22:16:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-10-31 22:16:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:10,224 INFO L225 Difference]: With dead ends: 2120 [2024-10-31 22:16:10,224 INFO L226 Difference]: Without dead ends: 1301 [2024-10-31 22:16:10,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:16:10,227 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 619 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:10,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 764 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:16:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2024-10-31 22:16:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1286. [2024-10-31 22:16:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1151 states have (on average 1.3388357949609035) internal successors, (1541), 1168 states have internal predecessors, (1541), 82 states have call successors, (82), 43 states have call predecessors, (82), 51 states have return successors, (117), 75 states have call predecessors, (117), 81 states have call successors, (117) [2024-10-31 22:16:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1740 transitions. [2024-10-31 22:16:10,304 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1740 transitions. Word has length 88 [2024-10-31 22:16:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:10,305 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 1740 transitions. [2024-10-31 22:16:10,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:16:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1740 transitions. [2024-10-31 22:16:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 22:16:10,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:10,308 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:10,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:16:10,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:10,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:10,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1198337708, now seen corresponding path program 1 times [2024-10-31 22:16:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858295849] [2024-10-31 22:16:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:16:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:16:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 22:16:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 22:16:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-31 22:16:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-31 22:16:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858295849] [2024-10-31 22:16:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858295849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:16:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535510704] [2024-10-31 22:16:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:10,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:10,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:16:10,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:16:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:10,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:16:10,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:16:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 22:16:10,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:16:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535510704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:10,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:16:10,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-31 22:16:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693650909] [2024-10-31 22:16:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:10,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:10,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:16:10,835 INFO L87 Difference]: Start difference. First operand 1286 states and 1740 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-31 22:16:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:10,900 INFO L93 Difference]: Finished difference Result 1665 states and 2208 transitions. [2024-10-31 22:16:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:10,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-10-31 22:16:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:10,903 INFO L225 Difference]: With dead ends: 1665 [2024-10-31 22:16:10,903 INFO L226 Difference]: Without dead ends: 365 [2024-10-31 22:16:10,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:16:10,907 INFO L432 NwaCegarLoop]: 704 mSDtfsCounter, 62 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:10,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1338 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:16:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-10-31 22:16:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-10-31 22:16:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 333 states have (on average 1.5525525525525525) internal successors, (517), 334 states have internal predecessors, (517), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-31 22:16:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 567 transitions. [2024-10-31 22:16:10,926 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 567 transitions. Word has length 103 [2024-10-31 22:16:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:10,926 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 567 transitions. [2024-10-31 22:16:10,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-31 22:16:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 567 transitions. [2024-10-31 22:16:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-31 22:16:10,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:10,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:10,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:16:11,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_751e9bf8-289a-470f-b5c4-1855df4b2b2f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:16:11,130 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:11,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash 829308766, now seen corresponding path program 1 times [2024-10-31 22:16:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343622006] [2024-10-31 22:16:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:11,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:16:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:11,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:16:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:11,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:16:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:11,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-31 22:16:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:11,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-31 22:16:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:11,365 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 22:16:11,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:11,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343622006] [2024-10-31 22:16:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343622006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:11,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:11,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:11,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055799265] [2024-10-31 22:16:11,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:11,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:11,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:11,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:11,368 INFO L87 Difference]: Start difference. First operand 365 states and 567 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:16:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:13,846 INFO L93 Difference]: Finished difference Result 851 states and 1345 transitions. [2024-10-31 22:16:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:16:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2024-10-31 22:16:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:13,851 INFO L225 Difference]: With dead ends: 851 [2024-10-31 22:16:13,852 INFO L226 Difference]: Without dead ends: 496 [2024-10-31 22:16:13,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:16:13,854 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 968 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:13,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 724 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-31 22:16:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-10-31 22:16:13,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 365. [2024-10-31 22:16:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 333 states have (on average 1.5495495495495495) internal successors, (516), 334 states have internal predecessors, (516), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-31 22:16:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 566 transitions. [2024-10-31 22:16:13,898 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 566 transitions. Word has length 167 [2024-10-31 22:16:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:13,899 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 566 transitions. [2024-10-31 22:16:13,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:16:13,900 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 566 transitions. [2024-10-31 22:16:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-31 22:16:13,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:13,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:13,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:16:13,904 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:13,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash -151646048, now seen corresponding path program 1 times [2024-10-31 22:16:13,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:13,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227300844] [2024-10-31 22:16:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:13,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:13,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:16:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:14,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:16:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:14,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:16:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:14,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-31 22:16:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:14,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-31 22:16:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:14,254 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 22:16:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227300844] [2024-10-31 22:16:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227300844] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:14,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:14,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380973324] [2024-10-31 22:16:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:14,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:14,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:14,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:14,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:14,259 INFO L87 Difference]: Start difference. First operand 365 states and 566 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:16:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:16,736 INFO L93 Difference]: Finished difference Result 843 states and 1328 transitions. [2024-10-31 22:16:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:16:16,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2024-10-31 22:16:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:16,741 INFO L225 Difference]: With dead ends: 843 [2024-10-31 22:16:16,741 INFO L226 Difference]: Without dead ends: 496 [2024-10-31 22:16:16,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:16:16,743 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 959 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:16,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 722 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-31 22:16:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-10-31 22:16:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 365. [2024-10-31 22:16:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 333 states have (on average 1.5465465465465464) internal successors, (515), 334 states have internal predecessors, (515), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-31 22:16:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 565 transitions. [2024-10-31 22:16:16,787 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 565 transitions. Word has length 167 [2024-10-31 22:16:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:16,789 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 565 transitions. [2024-10-31 22:16:16,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:16:16,789 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 565 transitions. [2024-10-31 22:16:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-31 22:16:16,791 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:16,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:16,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:16:16,792 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:16,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:16,793 INFO L85 PathProgramCache]: Analyzing trace with hash 113001442, now seen corresponding path program 1 times [2024-10-31 22:16:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:16,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324264626] [2024-10-31 22:16:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:16,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:16,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:16:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:17,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:16:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:17,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:16:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:17,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-31 22:16:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:17,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-31 22:16:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:17,189 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 22:16:17,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324264626] [2024-10-31 22:16:17,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324264626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:17,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:17,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:16:17,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083722824] [2024-10-31 22:16:17,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:17,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:16:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:16:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:17,194 INFO L87 Difference]: Start difference. First operand 365 states and 565 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:16:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:20,951 INFO L93 Difference]: Finished difference Result 1333 states and 2116 transitions. [2024-10-31 22:16:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:16:20,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2024-10-31 22:16:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:20,957 INFO L225 Difference]: With dead ends: 1333 [2024-10-31 22:16:20,957 INFO L226 Difference]: Without dead ends: 988 [2024-10-31 22:16:20,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:16:20,959 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 1463 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:20,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1235 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-31 22:16:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-10-31 22:16:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 727. [2024-10-31 22:16:21,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 668 states have (on average 1.5598802395209581) internal successors, (1042), 670 states have internal predecessors, (1042), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2024-10-31 22:16:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1135 transitions. [2024-10-31 22:16:21,078 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1135 transitions. Word has length 167 [2024-10-31 22:16:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:21,078 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1135 transitions. [2024-10-31 22:16:21,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:16:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1135 transitions. [2024-10-31 22:16:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-31 22:16:21,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:21,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:21,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:16:21,082 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:21,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1112587622, now seen corresponding path program 1 times [2024-10-31 22:16:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606507985] [2024-10-31 22:16:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:21,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:21,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:16:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:21,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:16:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:21,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:16:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:21,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-31 22:16:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:21,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-31 22:16:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:21,547 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 22:16:21,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:21,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606507985] [2024-10-31 22:16:21,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606507985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:21,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:16:21,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506346122] [2024-10-31 22:16:21,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:21,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:16:21,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:21,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:16:21,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:16:21,551 INFO L87 Difference]: Start difference. First operand 727 states and 1135 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)