./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme --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 c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:54:52,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:54:52,496 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:54:52,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:54:52,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:54:52,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:54:52,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:54:52,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:54:52,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:54:52,599 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:54:52,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:54:52,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:54:52,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:54:52,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:54:52,606 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:54:52,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:54:52,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:54:52,608 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:54:52,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:54:52,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:54:52,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:54:52,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:54:52,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:54:52,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:54:52,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:54:52,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:54:52,615 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:54:52,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:54:52,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:54:52,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:54:52,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:54:52,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:52,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:54:52,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:54:52,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:54:52,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:54:52,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:54:52,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:54:52,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:54:52,623 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:54:52,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:54:52,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:54:52,624 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_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c [2023-11-26 11:54:53,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:54:53,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:54:53,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:54:53,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:54:53,087 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:54:53,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2023-11-26 11:54:56,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:54:56,731 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:54:56,732 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2023-11-26 11:54:56,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/data/1eb0358ec/f58017e759eb42d583cb65c25652dc3f/FLAG3177c2f89 [2023-11-26 11:54:56,776 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/data/1eb0358ec/f58017e759eb42d583cb65c25652dc3f [2023-11-26 11:54:56,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:54:56,781 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:54:56,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:56,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:54:56,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:54:56,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:56" (1/1) ... [2023-11-26 11:54:56,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e143d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:56, skipping insertion in model container [2023-11-26 11:54:56,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:56" (1/1) ... [2023-11-26 11:54:56,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:54:57,034 WARN L240 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_396d5cd7-af4e-44d0-afab-8bb589ca87e3/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2023-11-26 11:54:57,110 WARN L240 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_396d5cd7-af4e-44d0-afab-8bb589ca87e3/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2023-11-26 11:54:57,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:57,346 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:54:57,367 WARN L240 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_396d5cd7-af4e-44d0-afab-8bb589ca87e3/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2023-11-26 11:54:57,394 WARN L240 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_396d5cd7-af4e-44d0-afab-8bb589ca87e3/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2023-11-26 11:54:57,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:57,499 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:54:57,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57 WrapperNode [2023-11-26 11:54:57,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:57,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:57,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:54:57,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:54:57,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,625 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1048 [2023-11-26 11:54:57,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:57,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:54:57,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:54:57,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:54:57,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,681 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]. [2023-11-26 11:54:57,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:54:57,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:54:57,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:54:57,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:54:57,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (1/1) ... [2023-11-26 11:54:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:57,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:57,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:54:57,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:54:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:54:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-26 11:54:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-26 11:54:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-26 11:54:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-26 11:54:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-26 11:54:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-26 11:54:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-26 11:54:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-26 11:54:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-26 11:54:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-26 11:54:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-26 11:54:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-26 11:54:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-26 11:54:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-26 11:54:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-26 11:54:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-26 11:54:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-26 11:54:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-26 11:54:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-26 11:54:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-26 11:54:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-26 11:54:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-26 11:54:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:54:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-26 11:54:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-26 11:54:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-26 11:54:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-26 11:54:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:54:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:54:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-26 11:54:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-26 11:54:58,022 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:54:58,026 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:54:59,140 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-26 11:54:59,140 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-26 11:54:59,246 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:54:59,344 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:54:59,344 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-26 11:54:59,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:59 BoogieIcfgContainer [2023-11-26 11:54:59,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:54:59,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:54:59,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:54:59,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:54:59,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:54:56" (1/3) ... [2023-11-26 11:54:59,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fd9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:59, skipping insertion in model container [2023-11-26 11:54:59,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:57" (2/3) ... [2023-11-26 11:54:59,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fd9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:59, skipping insertion in model container [2023-11-26 11:54:59,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:59" (3/3) ... [2023-11-26 11:54:59,357 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.11.cil-2.c [2023-11-26 11:54:59,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:54:59,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:54:59,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:59,476 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@1c8253a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:59,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:54:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 371 states have (on average 1.7115902964959568) internal successors, (635), 377 states have internal predecessors, (635), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-26 11:54:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:54:59,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:59,505 INFO L195 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] [2023-11-26 11:54:59,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:54:59,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:59,513 INFO L85 PathProgramCache]: Analyzing trace with hash -704538801, now seen corresponding path program 1 times [2023-11-26 11:54:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:59,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575184852] [2023-11-26 11:54:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:55:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:55:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575184852] [2023-11-26 11:55:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575184852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:00,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:00,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:00,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338669876] [2023-11-26 11:55:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:00,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:00,327 INFO L87 Difference]: Start difference. First operand has 429 states, 371 states have (on average 1.7115902964959568) internal successors, (635), 377 states have internal predecessors, (635), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:02,180 INFO L93 Difference]: Finished difference Result 972 states and 1613 transitions. [2023-11-26 11:55:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:55:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-11-26 11:55:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:02,202 INFO L225 Difference]: With dead ends: 972 [2023-11-26 11:55:02,203 INFO L226 Difference]: Without dead ends: 562 [2023-11-26 11:55:02,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:55:02,214 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1471 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:02,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1455 Invalid, 1658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [240 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:55:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-26 11:55:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 525. [2023-11-26 11:55:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 447 states have (on average 1.5838926174496644) internal successors, (708), 453 states have internal predecessors, (708), 54 states have call successors, (54), 21 states have call predecessors, (54), 22 states have return successors, (57), 53 states have call predecessors, (57), 52 states have call successors, (57) [2023-11-26 11:55:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 819 transitions. [2023-11-26 11:55:02,336 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 819 transitions. Word has length 57 [2023-11-26 11:55:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:02,337 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 819 transitions. [2023-11-26 11:55:02,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 819 transitions. [2023-11-26 11:55:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:55:02,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:02,343 INFO L195 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] [2023-11-26 11:55:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:02,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:02,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1646435727, now seen corresponding path program 1 times [2023-11-26 11:55:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373796135] [2023-11-26 11:55:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:02,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:55:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:55:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:02,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:02,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373796135] [2023-11-26 11:55:02,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373796135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:02,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370354281] [2023-11-26 11:55:02,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:02,630 INFO L87 Difference]: Start difference. First operand 525 states and 819 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:04,496 INFO L93 Difference]: Finished difference Result 886 states and 1349 transitions. [2023-11-26 11:55:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:55:04,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-11-26 11:55:04,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:04,514 INFO L225 Difference]: With dead ends: 886 [2023-11-26 11:55:04,514 INFO L226 Difference]: Without dead ends: 698 [2023-11-26 11:55:04,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:55:04,521 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1627 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:04,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 1704 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:55:04,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-26 11:55:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 626. [2023-11-26 11:55:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 526 states have (on average 1.564638783269962) internal successors, (823), 534 states have internal predecessors, (823), 67 states have call successors, (67), 28 states have call predecessors, (67), 31 states have return successors, (78), 67 states have call predecessors, (78), 65 states have call successors, (78) [2023-11-26 11:55:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 968 transitions. [2023-11-26 11:55:04,633 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 968 transitions. Word has length 57 [2023-11-26 11:55:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:04,634 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 968 transitions. [2023-11-26 11:55:04,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:04,634 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 968 transitions. [2023-11-26 11:55:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:55:04,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:04,643 INFO L195 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] [2023-11-26 11:55:04,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:04,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:04,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:04,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1755045231, now seen corresponding path program 1 times [2023-11-26 11:55:04,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:04,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127831060] [2023-11-26 11:55:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:04,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:55:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:55:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:04,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127831060] [2023-11-26 11:55:04,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127831060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:04,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:04,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:55:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020649828] [2023-11-26 11:55:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:55:04,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:55:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:04,870 INFO L87 Difference]: Start difference. First operand 626 states and 968 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-26 11:55:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:07,548 INFO L93 Difference]: Finished difference Result 2024 states and 3018 transitions. [2023-11-26 11:55:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:55:07,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-11-26 11:55:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:07,562 INFO L225 Difference]: With dead ends: 2024 [2023-11-26 11:55:07,562 INFO L226 Difference]: Without dead ends: 1723 [2023-11-26 11:55:07,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:55:07,566 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3480 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:07,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3498 Valid, 2267 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-26 11:55:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-11-26 11:55:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1590. [2023-11-26 11:55:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1285 states have (on average 1.4614785992217898) internal successors, (1878), 1308 states have internal predecessors, (1878), 177 states have call successors, (177), 111 states have call predecessors, (177), 126 states have return successors, (211), 173 states have call predecessors, (211), 175 states have call successors, (211) [2023-11-26 11:55:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2266 transitions. [2023-11-26 11:55:07,773 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2266 transitions. Word has length 57 [2023-11-26 11:55:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:07,773 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2266 transitions. [2023-11-26 11:55:07,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-26 11:55:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2266 transitions. [2023-11-26 11:55:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:55:07,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:07,775 INFO L195 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] [2023-11-26 11:55:07,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:55:07,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:07,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1009743390, now seen corresponding path program 1 times [2023-11-26 11:55:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368516316] [2023-11-26 11:55:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:07,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:55:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:55:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:08,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368516316] [2023-11-26 11:55:08,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368516316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:08,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:08,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:55:08,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343493138] [2023-11-26 11:55:08,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:08,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:55:08,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:55:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:08,046 INFO L87 Difference]: Start difference. First operand 1590 states and 2266 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:55:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:09,866 INFO L93 Difference]: Finished difference Result 2987 states and 4214 transitions. [2023-11-26 11:55:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:55:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-11-26 11:55:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:09,881 INFO L225 Difference]: With dead ends: 2987 [2023-11-26 11:55:09,884 INFO L226 Difference]: Without dead ends: 1728 [2023-11-26 11:55:09,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:55:09,897 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 596 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:09,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 2363 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:55:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2023-11-26 11:55:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1622. [2023-11-26 11:55:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1309 states have (on average 1.4484339190221542) internal successors, (1896), 1332 states have internal predecessors, (1896), 177 states have call successors, (177), 111 states have call predecessors, (177), 134 states have return successors, (219), 181 states have call predecessors, (219), 175 states have call successors, (219) [2023-11-26 11:55:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2292 transitions. [2023-11-26 11:55:10,044 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2292 transitions. Word has length 58 [2023-11-26 11:55:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:10,046 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2292 transitions. [2023-11-26 11:55:10,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:55:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2292 transitions. [2023-11-26 11:55:10,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:55:10,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:10,049 INFO L195 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] [2023-11-26 11:55:10,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:55:10,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:10,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:10,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1082129948, now seen corresponding path program 1 times [2023-11-26 11:55:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:10,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135647866] [2023-11-26 11:55:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:55:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:55:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:10,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135647866] [2023-11-26 11:55:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135647866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:10,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:10,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:55:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554008085] [2023-11-26 11:55:10,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:10,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:55:10,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:10,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:55:10,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:10,279 INFO L87 Difference]: Start difference. First operand 1622 states and 2292 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:55:13,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:13,083 INFO L93 Difference]: Finished difference Result 4881 states and 6853 transitions. [2023-11-26 11:55:13,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:55:13,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-11-26 11:55:13,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:13,096 INFO L225 Difference]: With dead ends: 4881 [2023-11-26 11:55:13,097 INFO L226 Difference]: Without dead ends: 1992 [2023-11-26 11:55:13,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:55:13,105 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 3582 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:13,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 2313 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 11:55:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2023-11-26 11:55:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1836. [2023-11-26 11:55:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1451 states have (on average 1.3955892487939352) internal successors, (2025), 1476 states have internal predecessors, (2025), 217 states have call successors, (217), 139 states have call predecessors, (217), 166 states have return successors, (265), 223 states have call predecessors, (265), 215 states have call successors, (265) [2023-11-26 11:55:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2507 transitions. [2023-11-26 11:55:13,258 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2507 transitions. Word has length 58 [2023-11-26 11:55:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:13,258 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 2507 transitions. [2023-11-26 11:55:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:55:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2507 transitions. [2023-11-26 11:55:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:55:13,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:13,261 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:55:13,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:13,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:13,262 INFO L85 PathProgramCache]: Analyzing trace with hash -833537195, now seen corresponding path program 1 times [2023-11-26 11:55:13,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:13,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055490971] [2023-11-26 11:55:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:55:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:55:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:55:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055490971] [2023-11-26 11:55:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055490971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:13,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:13,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:55:13,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468911713] [2023-11-26 11:55:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:13,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:55:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:55:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:13,433 INFO L87 Difference]: Start difference. First operand 1836 states and 2507 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:55:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:15,125 INFO L93 Difference]: Finished difference Result 3521 states and 4769 transitions. [2023-11-26 11:55:15,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:55:15,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-11-26 11:55:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:15,139 INFO L225 Difference]: With dead ends: 3521 [2023-11-26 11:55:15,139 INFO L226 Difference]: Without dead ends: 2016 [2023-11-26 11:55:15,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:55:15,145 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 876 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:15,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2065 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:55:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2023-11-26 11:55:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1884. [2023-11-26 11:55:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1487 states have (on average 1.3819771351714862) internal successors, (2055), 1512 states have internal predecessors, (2055), 217 states have call successors, (217), 139 states have call predecessors, (217), 178 states have return successors, (277), 235 states have call predecessors, (277), 215 states have call successors, (277) [2023-11-26 11:55:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2549 transitions. [2023-11-26 11:55:15,322 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2549 transitions. Word has length 80 [2023-11-26 11:55:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:15,325 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 2549 transitions. [2023-11-26 11:55:15,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:55:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2549 transitions. [2023-11-26 11:55:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:55:15,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:15,328 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:15,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:55:15,328 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:15,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1094735507, now seen corresponding path program 1 times [2023-11-26 11:55:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:15,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378564332] [2023-11-26 11:55:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:15,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:55:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:55:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:55:15,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:15,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378564332] [2023-11-26 11:55:15,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378564332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:15,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:15,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:15,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001085525] [2023-11-26 11:55:15,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:15,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:15,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:15,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:15,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:15,583 INFO L87 Difference]: Start difference. First operand 1884 states and 2549 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:17,302 INFO L93 Difference]: Finished difference Result 3283 states and 4385 transitions. [2023-11-26 11:55:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:55:17,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-26 11:55:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:17,319 INFO L225 Difference]: With dead ends: 3283 [2023-11-26 11:55:17,320 INFO L226 Difference]: Without dead ends: 1951 [2023-11-26 11:55:17,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:55:17,325 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1623 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:17,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 1499 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:55:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2023-11-26 11:55:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1676. [2023-11-26 11:55:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1332 states have (on average 1.3888888888888888) internal successors, (1850), 1352 states have internal predecessors, (1850), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2023-11-26 11:55:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2276 transitions. [2023-11-26 11:55:17,455 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2276 transitions. Word has length 80 [2023-11-26 11:55:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:17,455 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2276 transitions. [2023-11-26 11:55:17,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2276 transitions. [2023-11-26 11:55:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:55:17,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:17,461 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:17,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:55:17,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:17,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:17,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1518382229, now seen corresponding path program 1 times [2023-11-26 11:55:17,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:17,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205593170] [2023-11-26 11:55:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:17,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:55:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:55:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:55:17,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:17,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205593170] [2023-11-26 11:55:17,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205593170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:17,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:17,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:55:17,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150645953] [2023-11-26 11:55:17,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:17,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:55:17,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:17,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:55:17,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:17,642 INFO L87 Difference]: Start difference. First operand 1676 states and 2276 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:55:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:18,887 INFO L93 Difference]: Finished difference Result 4576 states and 6136 transitions. [2023-11-26 11:55:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:55:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-26 11:55:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:18,911 INFO L225 Difference]: With dead ends: 4576 [2023-11-26 11:55:18,911 INFO L226 Difference]: Without dead ends: 3232 [2023-11-26 11:55:18,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:55:18,917 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1548 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:18,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1258 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:55:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2023-11-26 11:55:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 3022. [2023-11-26 11:55:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 2358 states have (on average 1.3379983036471585) internal successors, (3155), 2407 states have internal predecessors, (3155), 350 states have call successors, (350), 233 states have call predecessors, (350), 312 states have return successors, (520), 384 states have call predecessors, (520), 348 states have call successors, (520) [2023-11-26 11:55:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4025 transitions. [2023-11-26 11:55:19,237 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4025 transitions. Word has length 80 [2023-11-26 11:55:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:19,237 INFO L495 AbstractCegarLoop]: Abstraction has 3022 states and 4025 transitions. [2023-11-26 11:55:19,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:55:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4025 transitions. [2023-11-26 11:55:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:55:19,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:19,240 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:19,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:55:19,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:19,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1595283027, now seen corresponding path program 1 times [2023-11-26 11:55:19,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:19,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328198340] [2023-11-26 11:55:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:19,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:55:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:55:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:55:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328198340] [2023-11-26 11:55:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328198340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:19,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:19,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510781878] [2023-11-26 11:55:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:19,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:19,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:19,405 INFO L87 Difference]: Start difference. First operand 3022 states and 4025 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:20,680 INFO L93 Difference]: Finished difference Result 4479 states and 5882 transitions. [2023-11-26 11:55:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:55:20,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-26 11:55:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:20,694 INFO L225 Difference]: With dead ends: 4479 [2023-11-26 11:55:20,694 INFO L226 Difference]: Without dead ends: 1789 [2023-11-26 11:55:20,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:20,703 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 699 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:20,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1347 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 11:55:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-11-26 11:55:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1676. [2023-11-26 11:55:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1332 states have (on average 1.3611111111111112) internal successors, (1813), 1352 states have internal predecessors, (1813), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2023-11-26 11:55:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2239 transitions. [2023-11-26 11:55:20,846 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2239 transitions. Word has length 80 [2023-11-26 11:55:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:20,847 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2239 transitions. [2023-11-26 11:55:20,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:55:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2239 transitions. [2023-11-26 11:55:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-26 11:55:20,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:20,849 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:55:20,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:20,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1489177597, now seen corresponding path program 1 times [2023-11-26 11:55:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:20,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541647135] [2023-11-26 11:55:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:55:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:55:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541647135] [2023-11-26 11:55:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541647135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:21,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:55:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853972334] [2023-11-26 11:55:21,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:21,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:55:21,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:21,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:55:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:21,058 INFO L87 Difference]: Start difference. First operand 1676 states and 2239 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:55:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:23,548 INFO L93 Difference]: Finished difference Result 3897 states and 5125 transitions. [2023-11-26 11:55:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-26 11:55:23,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-11-26 11:55:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:23,569 INFO L225 Difference]: With dead ends: 3897 [2023-11-26 11:55:23,569 INFO L226 Difference]: Without dead ends: 2412 [2023-11-26 11:55:23,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:55:23,574 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 2285 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:23,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 1826 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:55:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2023-11-26 11:55:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2248. [2023-11-26 11:55:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1750 states have (on average 1.3177142857142856) internal successors, (2306), 1778 states have internal predecessors, (2306), 266 states have call successors, (266), 168 states have call predecessors, (266), 230 states have return successors, (368), 303 states have call predecessors, (368), 264 states have call successors, (368) [2023-11-26 11:55:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2940 transitions. [2023-11-26 11:55:23,808 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2940 transitions. Word has length 81 [2023-11-26 11:55:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:23,809 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 2940 transitions. [2023-11-26 11:55:23,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:55:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2940 transitions. [2023-11-26 11:55:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-26 11:55:23,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:23,814 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:23,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:55:23,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:23,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash -205280706, now seen corresponding path program 1 times [2023-11-26 11:55:23,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:23,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845987621] [2023-11-26 11:55:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:55:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:55:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:55:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:55:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 11:55:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 11:55:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 11:55:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:55:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 11:55:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-26 11:55:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 11:55:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845987621] [2023-11-26 11:55:24,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845987621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025527043] [2023-11-26 11:55:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:24,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:24,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:24,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:55:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:24,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-26 11:55:24,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025527043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:24,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:24,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-26 11:55:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844413749] [2023-11-26 11:55:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:24,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:24,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:24,538 INFO L87 Difference]: Start difference. First operand 2248 states and 2940 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 11:55:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:24,888 INFO L93 Difference]: Finished difference Result 5844 states and 7439 transitions. [2023-11-26 11:55:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:24,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-26 11:55:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:24,914 INFO L225 Difference]: With dead ends: 5844 [2023-11-26 11:55:24,915 INFO L226 Difference]: Without dead ends: 3998 [2023-11-26 11:55:24,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:24,922 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 57 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:24,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1205 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2023-11-26 11:55:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3958. [2023-11-26 11:55:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3047 states have (on average 1.279947489333771) internal successors, (3900), 3098 states have internal predecessors, (3900), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2023-11-26 11:55:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5009 transitions. [2023-11-26 11:55:25,304 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5009 transitions. Word has length 145 [2023-11-26 11:55:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:25,306 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 5009 transitions. [2023-11-26 11:55:25,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 11:55:25,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5009 transitions. [2023-11-26 11:55:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-26 11:55:25,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:25,311 INFO L195 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] [2023-11-26 11:55:25,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:55:25,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396d5cd7-af4e-44d0-afab-8bb589ca87e3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:55:25,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:25,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash -339032444, now seen corresponding path program 1 times [2023-11-26 11:55:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:25,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714490189] [2023-11-26 11:55:25,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:55:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 11:55:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-26 11:55:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:25,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:25,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714490189] [2023-11-26 11:55:25,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714490189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:25,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126246011] [2023-11-26 11:55:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:25,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:25,800 INFO L87 Difference]: Start difference. First operand 3958 states and 5009 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-11-26 11:55:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:29,437 INFO L93 Difference]: Finished difference Result 4391 states and 5731 transitions. [2023-11-26 11:55:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 151 [2023-11-26 11:55:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:29,460 INFO L225 Difference]: With dead ends: 4391 [2023-11-26 11:55:29,460 INFO L226 Difference]: Without dead ends: 4078 [2023-11-26 11:55:29,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:29,463 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1006 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:29,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 813 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:55:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2023-11-26 11:55:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3958. [2023-11-26 11:55:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3047 states have (on average 1.2796192976698393) internal successors, (3899), 3098 states have internal predecessors, (3899), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2023-11-26 11:55:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5008 transitions. [2023-11-26 11:55:30,184 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5008 transitions. Word has length 151 [2023-11-26 11:55:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:30,184 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 5008 transitions. [2023-11-26 11:55:30,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-11-26 11:55:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5008 transitions. [2023-11-26 11:55:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-26 11:55:30,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:30,188 INFO L195 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] [2023-11-26 11:55:30,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:55:30,188 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:30,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1448837378, now seen corresponding path program 1 times [2023-11-26 11:55:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:30,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079661442] [2023-11-26 11:55:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:55:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 11:55:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-26 11:55:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079661442] [2023-11-26 11:55:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079661442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:30,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651365290] [2023-11-26 11:55:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:30,566 INFO L87 Difference]: Start difference. First operand 3958 states and 5008 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-26 11:55:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:35,636 INFO L93 Difference]: Finished difference Result 4827 states and 6460 transitions. [2023-11-26 11:55:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-11-26 11:55:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:35,660 INFO L225 Difference]: With dead ends: 4827 [2023-11-26 11:55:35,661 INFO L226 Difference]: Without dead ends: 4521 [2023-11-26 11:55:35,663 INFO L412 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 [2023-11-26 11:55:35,664 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1588 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:35,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 1187 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-26 11:55:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2023-11-26 11:55:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4282. [2023-11-26 11:55:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 3344 states have (on average 1.312200956937799) internal successors, (4388), 3396 states have internal predecessors, (4388), 493 states have call successors, (493), 335 states have call predecessors, (493), 443 states have return successors, (659), 552 states have call predecessors, (659), 491 states have call successors, (659) [2023-11-26 11:55:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 5540 transitions. [2023-11-26 11:55:36,425 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 5540 transitions. Word has length 151 [2023-11-26 11:55:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:36,425 INFO L495 AbstractCegarLoop]: Abstraction has 4282 states and 5540 transitions. [2023-11-26 11:55:36,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-26 11:55:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 5540 transitions. [2023-11-26 11:55:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-26 11:55:36,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:36,429 INFO L195 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] [2023-11-26 11:55:36,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:55:36,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:36,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash 903964804, now seen corresponding path program 1 times [2023-11-26 11:55:36,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:36,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306287223] [2023-11-26 11:55:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:36,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:55:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:36,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 11:55:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:36,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-26 11:55:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:36,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:36,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306287223] [2023-11-26 11:55:36,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306287223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:36,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:36,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:55:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141495440] [2023-11-26 11:55:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:36,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:55:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:55:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:36,897 INFO L87 Difference]: Start difference. First operand 4282 states and 5540 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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)