./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX --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 d1c5dbef70eb17e658ce13a53ba3c925aaef4da45bcaa9e57399f7ada50ab560 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:04:18,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:04:18,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:04:18,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:04:18,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:04:18,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:04:18,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:04:18,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:04:18,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:04:18,731 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:04:18,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:04:18,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:04:18,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:04:18,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:04:18,735 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:04:18,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:04:18,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:04:18,736 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:04:18,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:04:18,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:04:18,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:04:18,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:04:18,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:04:18,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:04:18,742 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:04:18,742 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:04:18,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:04:18,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:04:18,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:04:18,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:04:18,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:04:18,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:04:18,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:18,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:04:18,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:04:18,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:04:18,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:04:18,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:04:18,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:04:18,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:04:18,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:04:18,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:04:18,749 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_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1c5dbef70eb17e658ce13a53ba3c925aaef4da45bcaa9e57399f7ada50ab560 [2024-11-08 16:04:19,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:04:19,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:04:19,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:04:19,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:04:19,093 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:04:19,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c Unable to find full path for "g++" [2024-11-08 16:04:21,232 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:04:21,484 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:04:21,485 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c [2024-11-08 16:04:21,491 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/data/6f4c62138/b0b6fcf99989481e90f4bde9d29be834/FLAG1900d03e5 [2024-11-08 16:04:21,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/data/6f4c62138/b0b6fcf99989481e90f4bde9d29be834 [2024-11-08 16:04:21,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:04:21,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:04:21,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:21,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:04:21,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:04:21,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac5c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21, skipping insertion in model container [2024-11-08 16:04:21,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,540 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:04:21,735 WARN L250 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_dd156ef6-67c5-4c69-8ace-63682fbc5966/sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c[331,344] [2024-11-08 16:04:21,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:21,784 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:04:21,806 WARN L250 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_dd156ef6-67c5-4c69-8ace-63682fbc5966/sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c[331,344] [2024-11-08 16:04:21,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:21,850 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:04:21,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21 WrapperNode [2024-11-08 16:04:21,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:21,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:21,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:04:21,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:04:21,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,913 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-08 16:04:21,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:21,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:04:21,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:04:21,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:04:21,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,958 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 16:04:21,959 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:04:21,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:04:21,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:04:21,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:04:21,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (1/1) ... [2024-11-08 16:04:21,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:22,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:22,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:04:22,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:04:22,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:04:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:04:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:04:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:04:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:04:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:04:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:04:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:04:22,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:04:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:04:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:04:22,184 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:04:22,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:04:22,498 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-08 16:04:22,499 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:04:22,520 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:04:22,522 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:04:22,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:22 BoogieIcfgContainer [2024-11-08 16:04:22,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:04:22,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:04:22,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:04:22,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:04:22,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:04:21" (1/3) ... [2024-11-08 16:04:22,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12710ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:22, skipping insertion in model container [2024-11-08 16:04:22,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:21" (2/3) ... [2024-11-08 16:04:22,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12710ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:22, skipping insertion in model container [2024-11-08 16:04:22,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:22" (3/3) ... [2024-11-08 16:04:22,531 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_2.c [2024-11-08 16:04:22,550 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:04:22,550 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:04:22,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:04:22,637 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4357305e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:04:22,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:04:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:22,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:04:22,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:22,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:22,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:22,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1757517356, now seen corresponding path program 1 times [2024-11-08 16:04:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:22,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279482839] [2024-11-08 16:04:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:22,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279482839] [2024-11-08 16:04:22,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279482839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:22,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:22,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266970542] [2024-11-08 16:04:22,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:22,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:04:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:04:23,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:04:23,003 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:23,026 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-08 16:04:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:04:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 16:04:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:23,040 INFO L225 Difference]: With dead ends: 43 [2024-11-08 16:04:23,041 INFO L226 Difference]: Without dead ends: 19 [2024-11-08 16:04:23,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:04:23,050 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:23,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:04:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-08 16:04:23,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-08 16:04:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-08 16:04:23,097 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 12 [2024-11-08 16:04:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:23,098 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-08 16:04:23,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-08 16:04:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:04:23,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:23,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:23,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:04:23,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:23,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2144422930, now seen corresponding path program 1 times [2024-11-08 16:04:23,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976365373] [2024-11-08 16:04:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:23,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976365373] [2024-11-08 16:04:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976365373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:23,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:23,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:04:23,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847673913] [2024-11-08 16:04:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:23,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:04:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:04:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:04:23,470 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:23,575 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2024-11-08 16:04:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:04:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 16:04:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:23,577 INFO L225 Difference]: With dead ends: 48 [2024-11-08 16:04:23,577 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 16:04:23,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:04:23,580 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:23,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 19 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 16:04:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2024-11-08 16:04:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-08 16:04:23,588 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-11-08 16:04:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:23,589 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 16:04:23,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-08 16:04:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 16:04:23,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:23,592 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:23,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:04:23,593 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:23,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash -14152099, now seen corresponding path program 1 times [2024-11-08 16:04:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950282123] [2024-11-08 16:04:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950282123] [2024-11-08 16:04:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950282123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:23,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:23,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:04:24,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128881010] [2024-11-08 16:04:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:24,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:04:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:04:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:04:24,003 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:24,162 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-08 16:04:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:04:24,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-08 16:04:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:24,166 INFO L225 Difference]: With dead ends: 48 [2024-11-08 16:04:24,166 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 16:04:24,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:04:24,169 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:24,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 37 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 16:04:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2024-11-08 16:04:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-08 16:04:24,182 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2024-11-08 16:04:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:24,183 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-08 16:04:24,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-08 16:04:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 16:04:24,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:24,184 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:24,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:04:24,186 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:24,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:24,189 INFO L85 PathProgramCache]: Analyzing trace with hash -407179109, now seen corresponding path program 1 times [2024-11-08 16:04:24,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:24,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160797485] [2024-11-08 16:04:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:24,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:24,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:24,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160797485] [2024-11-08 16:04:24,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160797485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:24,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079777537] [2024-11-08 16:04:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:24,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:24,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:24,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:24,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:04:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:24,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:04:24,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:24,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079777537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:24,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:24,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:04:24,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218605775] [2024-11-08 16:04:24,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:24,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:04:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:04:24,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:04:24,683 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:24,874 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2024-11-08 16:04:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:04:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-08 16:04:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:24,876 INFO L225 Difference]: With dead ends: 78 [2024-11-08 16:04:24,876 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 16:04:24,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:04:24,880 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 151 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:24,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 34 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:24,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 16:04:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2024-11-08 16:04:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-11-08 16:04:24,896 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 18 [2024-11-08 16:04:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:24,898 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-11-08 16:04:24,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-11-08 16:04:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 16:04:24,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:24,900 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:24,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:04:25,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:25,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:25,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:25,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1242612864, now seen corresponding path program 1 times [2024-11-08 16:04:25,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:25,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800433645] [2024-11-08 16:04:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:25,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:04:25,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800433645] [2024-11-08 16:04:25,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800433645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673984759] [2024-11-08 16:04:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:25,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:25,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:25,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:25,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:04:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:25,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:04:25,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:25,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:26,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673984759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:26,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:26,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-08 16:04:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688980264] [2024-11-08 16:04:26,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:26,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 16:04:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 16:04:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:04:26,084 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:26,840 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2024-11-08 16:04:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:04:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-08 16:04:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:26,843 INFO L225 Difference]: With dead ends: 185 [2024-11-08 16:04:26,843 INFO L226 Difference]: Without dead ends: 162 [2024-11-08 16:04:26,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:04:26,847 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 462 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:26,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 107 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:04:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-08 16:04:26,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 74. [2024-11-08 16:04:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-08 16:04:26,867 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 36 [2024-11-08 16:04:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:26,867 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-08 16:04:26,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-08 16:04:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:04:26,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:26,871 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 8, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:26,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:04:27,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:27,072 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:27,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:27,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1092008698, now seen corresponding path program 2 times [2024-11-08 16:04:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:27,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527515774] [2024-11-08 16:04:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:27,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 16:04:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527515774] [2024-11-08 16:04:27,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527515774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:27,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:04:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825044583] [2024-11-08 16:04:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:27,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:04:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:04:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:04:27,895 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:28,027 INFO L93 Difference]: Finished difference Result 142 states and 176 transitions. [2024-11-08 16:04:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:04:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-08 16:04:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:28,028 INFO L225 Difference]: With dead ends: 142 [2024-11-08 16:04:28,028 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 16:04:28,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:04:28,030 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:28,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 36 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 16:04:28,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2024-11-08 16:04:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 83 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2024-11-08 16:04:28,042 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 72 [2024-11-08 16:04:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:28,042 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2024-11-08 16:04:28,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2024-11-08 16:04:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:04:28,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:28,044 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:28,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:04:28,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:28,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1002796736, now seen corresponding path program 3 times [2024-11-08 16:04:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:28,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45245555] [2024-11-08 16:04:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 153 proven. 75 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 16:04:28,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45245555] [2024-11-08 16:04:28,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45245555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249182278] [2024-11-08 16:04:28,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:04:28,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:28,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:28,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:28,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:04:28,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-08 16:04:28,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:28,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:04:28,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-08 16:04:29,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:04:29,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249182278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:29,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:04:29,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-08 16:04:29,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340154063] [2024-11-08 16:04:29,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:29,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:04:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:29,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:04:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:04:29,392 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:29,565 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2024-11-08 16:04:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:04:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-08 16:04:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:29,568 INFO L225 Difference]: With dead ends: 98 [2024-11-08 16:04:29,570 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 16:04:29,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:04:29,572 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:29,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 48 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:04:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 16:04:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-08 16:04:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 95 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2024-11-08 16:04:29,595 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 72 [2024-11-08 16:04:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:29,598 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2024-11-08 16:04:29,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2024-11-08 16:04:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 16:04:29,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:29,600 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:29,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:04:29,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 16:04:29,802 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:29,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1229388341, now seen corresponding path program 1 times [2024-11-08 16:04:29,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:29,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765054378] [2024-11-08 16:04:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:29,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 153 proven. 75 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-08 16:04:30,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:30,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765054378] [2024-11-08 16:04:30,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765054378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:30,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738924053] [2024-11-08 16:04:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:30,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:30,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:30,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:30,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:04:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:30,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:04:30,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:04:31,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:04:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738924053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:31,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-11-08 16:04:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631904414] [2024-11-08 16:04:31,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:31,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:04:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:04:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:04:31,456 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 31 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:32,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:32,500 INFO L93 Difference]: Finished difference Result 646 states and 763 transitions. [2024-11-08 16:04:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:04:32,501 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 31 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 16:04:32,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:32,503 INFO L225 Difference]: With dead ends: 646 [2024-11-08 16:04:32,503 INFO L226 Difference]: Without dead ends: 589 [2024-11-08 16:04:32,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=671, Invalid=1135, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 16:04:32,505 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 728 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:32,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 170 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:04:32,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-08 16:04:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 180. [2024-11-08 16:04:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1508379888268156) internal successors, (206), 179 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions. [2024-11-08 16:04:32,533 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 78 [2024-11-08 16:04:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:32,533 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 206 transitions. [2024-11-08 16:04:32,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 31 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions. [2024-11-08 16:04:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-08 16:04:32,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:32,536 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:32,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:04:32,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 16:04:32,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:32,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash 66630863, now seen corresponding path program 2 times [2024-11-08 16:04:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558892982] [2024-11-08 16:04:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 735 proven. 363 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-08 16:04:34,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558892982] [2024-11-08 16:04:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558892982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929457951] [2024-11-08 16:04:34,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:04:34,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:34,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:04:34,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:04:34,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:34,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 16:04:34,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:04:36,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:04:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929457951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:37,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:37,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 25] total 61 [2024-11-08 16:04:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664224970] [2024-11-08 16:04:37,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:37,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-08 16:04:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:37,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-08 16:04:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2388, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 16:04:37,529 INFO L87 Difference]: Start difference. First operand 180 states and 206 transitions. Second operand has 62 states, 62 states have (on average 5.806451612903226) internal successors, (360), 61 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:40,419 INFO L93 Difference]: Finished difference Result 1342 states and 1585 transitions. [2024-11-08 16:04:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 16:04:40,420 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.806451612903226) internal successors, (360), 61 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-08 16:04:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:40,424 INFO L225 Difference]: With dead ends: 1342 [2024-11-08 16:04:40,425 INFO L226 Difference]: Without dead ends: 1237 [2024-11-08 16:04:40,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2567, Invalid=4573, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 16:04:40,428 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2097 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:40,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 345 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:04:40,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-08 16:04:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 348. [2024-11-08 16:04:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.1469740634005763) internal successors, (398), 347 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 398 transitions. [2024-11-08 16:04:40,485 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 398 transitions. Word has length 150 [2024-11-08 16:04:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:40,486 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 398 transitions. [2024-11-08 16:04:40,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.806451612903226) internal successors, (360), 61 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 398 transitions. [2024-11-08 16:04:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-08 16:04:40,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:40,496 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 23, 23, 23, 23, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:40,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:04:40,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:40,697 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:40,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1160768215, now seen corresponding path program 3 times [2024-11-08 16:04:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:40,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69372930] [2024-11-08 16:04:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 3195 proven. 1587 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2024-11-08 16:04:44,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69372930] [2024-11-08 16:04:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69372930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563643826] [2024-11-08 16:04:44,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:04:44,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:44,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:44,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:04:44,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 16:04:44,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:44,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 16:04:44,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:46,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-08 16:04:46,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-08 16:04:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 45 proven. 181 refuted. 0 times theorem prover too weak. 6035 trivial. 0 not checked. [2024-11-08 16:04:46,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:46,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 65 [2024-11-08 16:04:46,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:04:46,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 89 [2024-11-08 16:04:46,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2024-11-08 16:04:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 6035 trivial. 0 not checked. [2024-11-08 16:04:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563643826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:49,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8, 8] total 40 [2024-11-08 16:04:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479585365] [2024-11-08 16:04:49,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:49,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 16:04:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 16:04:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1240, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 16:04:49,280 INFO L87 Difference]: Start difference. First operand 348 states and 398 transitions. Second operand has 41 states, 41 states have (on average 4.804878048780488) internal successors, (197), 40 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:04:51,855 INFO L93 Difference]: Finished difference Result 1248 states and 1460 transitions. [2024-11-08 16:04:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 16:04:51,856 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.804878048780488) internal successors, (197), 40 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2024-11-08 16:04:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:04:51,860 INFO L225 Difference]: With dead ends: 1248 [2024-11-08 16:04:51,860 INFO L226 Difference]: Without dead ends: 1047 [2024-11-08 16:04:51,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 573 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1457, Invalid=4395, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 16:04:51,864 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2460 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:04:51,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 278 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:04:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2024-11-08 16:04:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 420. [2024-11-08 16:04:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.1575178997613365) internal successors, (485), 419 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 485 transitions. [2024-11-08 16:04:51,898 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 485 transitions. Word has length 294 [2024-11-08 16:04:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:04:51,899 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 485 transitions. [2024-11-08 16:04:51,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.804878048780488) internal successors, (197), 40 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 485 transitions. [2024-11-08 16:04:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-08 16:04:51,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:51,904 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 35, 24, 22, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:51,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:04:52,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:04:52,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:52,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -783699203, now seen corresponding path program 4 times [2024-11-08 16:04:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387870174] [2024-11-08 16:04:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 3184 proven. 1728 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2024-11-08 16:04:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:54,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387870174] [2024-11-08 16:04:54,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387870174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:54,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122086353] [2024-11-08 16:04:54,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:04:54,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:54,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:54,782 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:54,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:05:00,591 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:05:00,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:05:00,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 16:05:00,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:05:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:05:03,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:05:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:05:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122086353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:05:06,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:05:06,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 49, 49] total 122 [2024-11-08 16:05:06,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558899598] [2024-11-08 16:05:06,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:05:06,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-08 16:05:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:05:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-08 16:05:06,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5429, Invalid=9577, Unknown=0, NotChecked=0, Total=15006 [2024-11-08 16:05:06,868 INFO L87 Difference]: Start difference. First operand 420 states and 485 transitions. Second operand has 123 states, 123 states have (on average 5.9105691056910565) internal successors, (727), 122 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:05:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:05:17,217 INFO L93 Difference]: Finished difference Result 2986 states and 3541 transitions. [2024-11-08 16:05:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-08 16:05:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 5.9105691056910565) internal successors, (727), 122 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2024-11-08 16:05:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:05:17,227 INFO L225 Difference]: With dead ends: 2986 [2024-11-08 16:05:17,227 INFO L226 Difference]: Without dead ends: 2719 [2024-11-08 16:05:17,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9046 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=10082, Invalid=18648, Unknown=0, NotChecked=0, Total=28730 [2024-11-08 16:05:17,233 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5885 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5885 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:05:17,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5885 Valid, 710 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 16:05:17,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2024-11-08 16:05:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 868. [2024-11-08 16:05:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.1672433679354095) internal successors, (1012), 867 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:05:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1012 transitions. [2024-11-08 16:05:17,311 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1012 transitions. Word has length 294 [2024-11-08 16:05:17,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:05:17,311 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1012 transitions. [2024-11-08 16:05:17,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 5.9105691056910565) internal successors, (727), 122 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:05:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1012 transitions. [2024-11-08 16:05:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-11-08 16:05:17,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:05:17,327 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 71, 47, 47, 23, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:05:17,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:05:17,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:05:17,527 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:05:17,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:05:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash -441040329, now seen corresponding path program 5 times [2024-11-08 16:05:17,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:05:17,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540356778] [2024-11-08 16:05:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:17,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:05:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 26325 backedges. 13299 proven. 6627 refuted. 0 times theorem prover too weak. 6399 trivial. 0 not checked. [2024-11-08 16:05:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:05:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540356778] [2024-11-08 16:05:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540356778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:05:27,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623827237] [2024-11-08 16:05:27,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:05:27,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:05:27,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:05:27,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:05:27,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd156ef6-67c5-4c69-8ace-63682fbc5966/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process