./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/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_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/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_37c80414-20ed-4940-8e6f-41e32240ba6a/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 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:06:11,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:06:11,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:06:11,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:06:11,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:06:11,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:06:11,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:06:11,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:06:11,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:06:11,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:06:11,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:06:11,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:06:11,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:06:11,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:06:11,604 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:06:11,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:06:11,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:06:11,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:06:11,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:06:11,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:06:11,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:06:11,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:06:11,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:06:11,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:06:11,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:06:11,611 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:06:11,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:06:11,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:06:11,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:06:11,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:06:11,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:06:11,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:06:11,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:06:11,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:06:11,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:06:11,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:06:11,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:06:11,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:06:11,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:06:11,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:06:11,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:06:11,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:06:11,618 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_37c80414-20ed-4940-8e6f-41e32240ba6a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b [2024-11-08 16:06:11,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:06:12,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:06:12,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:06:12,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:06:12,012 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:06:12,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c Unable to find full path for "g++" [2024-11-08 16:06:14,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:06:14,351 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:06:14,352 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2024-11-08 16:06:14,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/data/b2ac79fce/70d8f4f834894dfa8da249176cda4dd9/FLAG072a10ecf [2024-11-08 16:06:14,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/data/b2ac79fce/70d8f4f834894dfa8da249176cda4dd9 [2024-11-08 16:06:14,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:06:14,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:06:14,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:06:14,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:06:14,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:06:14,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d82b4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14, skipping insertion in model container [2024-11-08 16:06:14,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,418 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:06:14,617 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_37c80414-20ed-4940-8e6f-41e32240ba6a/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c[331,344] [2024-11-08 16:06:14,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:06:14,658 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:06:14,670 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_37c80414-20ed-4940-8e6f-41e32240ba6a/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c[331,344] [2024-11-08 16:06:14,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:06:14,706 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:06:14,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14 WrapperNode [2024-11-08 16:06:14,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:06:14,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:06:14,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:06:14,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:06:14,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,726 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,746 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-08 16:06:14,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:06:14,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:06:14,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:06:14,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:06:14,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,765 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,781 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 16:06:14,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:06:14,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:06:14,806 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:06:14,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:06:14,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (1/1) ... [2024-11-08 16:06:14,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:06:14,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:14,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:06:14,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:06:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:06:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:06:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:06:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:06:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:06:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:06:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:06:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:06:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:06:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:06:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:06:14,967 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:06:14,969 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:06:15,168 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-08 16:06:15,168 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:06:15,189 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:06:15,191 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:06:15,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:06:15 BoogieIcfgContainer [2024-11-08 16:06:15,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:06:15,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:06:15,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:06:15,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:06:15,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:06:14" (1/3) ... [2024-11-08 16:06:15,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fe5929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:06:15, skipping insertion in model container [2024-11-08 16:06:15,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:14" (2/3) ... [2024-11-08 16:06:15,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fe5929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:06:15, skipping insertion in model container [2024-11-08 16:06:15,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:06:15" (3/3) ... [2024-11-08 16:06:15,210 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_4.c [2024-11-08 16:06:15,234 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:06:15,235 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:06:15,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:06:15,338 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;@16ebfb89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:06:15,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:06:15,344 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 16:06:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:06:15,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:15,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:06:15,357 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:15,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1757517356, now seen corresponding path program 1 times [2024-11-08 16:06:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:15,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060122479] [2024-11-08 16:06:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:15,686 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 16:06:15,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060122479] [2024-11-08 16:06:15,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060122479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:06:15,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:06:15,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:06:15,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679147394] [2024-11-08 16:06:15,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:06:15,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:06:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:06:15,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:06:15,734 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 16:06:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:15,754 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-08 16:06:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:06:15,758 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 16:06:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:15,768 INFO L225 Difference]: With dead ends: 43 [2024-11-08 16:06:15,769 INFO L226 Difference]: Without dead ends: 19 [2024-11-08 16:06:15,772 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 16:06:15,778 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 16:06:15,779 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 16:06:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-08 16:06:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-08 16:06:15,816 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 16:06:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-08 16:06:15,819 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 12 [2024-11-08 16:06:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:15,820 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-08 16:06:15,820 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 16:06:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-08 16:06:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:06:15,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:15,824 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:06:15,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:06:15,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:15,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2144422930, now seen corresponding path program 1 times [2024-11-08 16:06:15,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:15,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024375057] [2024-11-08 16:06:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:16,122 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 16:06:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024375057] [2024-11-08 16:06:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024375057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:06:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:06:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:06:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798448874] [2024-11-08 16:06:16,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:06:16,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:06:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:06:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:06:16,127 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 16:06:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:16,207 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2024-11-08 16:06:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:06:16,208 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 16:06:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:16,209 INFO L225 Difference]: With dead ends: 48 [2024-11-08 16:06:16,209 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 16:06:16,209 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 16:06:16,211 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 16:06:16,211 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 16:06:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 16:06:16,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2024-11-08 16:06:16,221 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 16:06:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-08 16:06:16,222 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-11-08 16:06:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:16,222 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 16:06:16,223 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 16:06:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-08 16:06:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 16:06:16,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:16,224 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 16:06:16,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:06:16,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:16,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash -14152099, now seen corresponding path program 1 times [2024-11-08 16:06:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:16,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259043037] [2024-11-08 16:06:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:16,575 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 16:06:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:16,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259043037] [2024-11-08 16:06:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259043037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:06:16,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:06:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:06:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049563187] [2024-11-08 16:06:16,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:06:16,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:06:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:06:16,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:06:16,578 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 16:06:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:16,680 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-08 16:06:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:06:16,681 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 16:06:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:16,682 INFO L225 Difference]: With dead ends: 48 [2024-11-08 16:06:16,682 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 16:06:16,682 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 16:06:16,684 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 16:06:16,684 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 16:06:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 16:06:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2024-11-08 16:06:16,688 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 16:06:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-08 16:06:16,689 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2024-11-08 16:06:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:16,690 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-08 16:06:16,690 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 16:06:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-08 16:06:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 16:06:16,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:16,691 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 16:06:16,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:06:16,691 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:16,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:16,692 INFO L85 PathProgramCache]: Analyzing trace with hash -407179109, now seen corresponding path program 1 times [2024-11-08 16:06:16,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:16,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669025059] [2024-11-08 16:06:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:16,816 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 16:06:16,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:16,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669025059] [2024-11-08 16:06:16,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669025059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:06:16,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754099234] [2024-11-08 16:06:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:16,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:16,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:16,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:06:16,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:06:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:16,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:06:16,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:06:17,095 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 16:06:17,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:06:17,179 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 16:06:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754099234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:06:17,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:06:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:06:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314877884] [2024-11-08 16:06:17,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:06:17,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:06:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:06:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:06:17,188 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 16:06:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:17,397 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2024-11-08 16:06:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:06:17,398 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 16:06:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:17,399 INFO L225 Difference]: With dead ends: 78 [2024-11-08 16:06:17,401 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 16:06:17,402 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 16:06:17,403 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:06:17,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 34 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:06:17,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 16:06:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2024-11-08 16:06:17,416 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 16:06:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-11-08 16:06:17,418 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 18 [2024-11-08 16:06:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:17,418 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-11-08 16:06:17,419 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 16:06:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-11-08 16:06:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 16:06:17,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:17,420 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 16:06:17,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:06:17,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:17,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:17,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1242612864, now seen corresponding path program 1 times [2024-11-08 16:06:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321115969] [2024-11-08 16:06:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:17,933 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 16:06:17,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321115969] [2024-11-08 16:06:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321115969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:06:17,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807157196] [2024-11-08 16:06:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:17,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:17,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:17,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:06:17,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:06:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:18,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:06:18,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:06:18,254 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 16:06:18,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:06:18,462 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 16:06:18,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807157196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:06:18,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:06:18,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-08 16:06:18,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338016638] [2024-11-08 16:06:18,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:06:18,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 16:06:18,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 16:06:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:06:18,472 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 16:06:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:19,217 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2024-11-08 16:06:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:06:19,218 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 16:06:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:19,219 INFO L225 Difference]: With dead ends: 185 [2024-11-08 16:06:19,220 INFO L226 Difference]: Without dead ends: 162 [2024-11-08 16:06:19,221 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 16:06:19,222 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 16:06:19,222 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 16:06:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-08 16:06:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 74. [2024-11-08 16:06:19,234 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 16:06:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-08 16:06:19,235 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 36 [2024-11-08 16:06:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:19,235 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-08 16:06:19,236 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 16:06:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-08 16:06:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:06:19,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:19,238 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 16:06:19,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:06:19,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:19,443 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:19,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1092008698, now seen corresponding path program 2 times [2024-11-08 16:06:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:19,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112171508] [2024-11-08 16:06:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:20,398 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 16:06:20,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:20,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112171508] [2024-11-08 16:06:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112171508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:06:20,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:06:20,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:06:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020878420] [2024-11-08 16:06:20,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:06:20,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:06:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:06:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:06:20,404 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 16:06:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:20,515 INFO L93 Difference]: Finished difference Result 142 states and 176 transitions. [2024-11-08 16:06:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:06:20,516 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 16:06:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:20,517 INFO L225 Difference]: With dead ends: 142 [2024-11-08 16:06:20,517 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 16:06:20,517 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 16:06:20,518 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 16:06:20,519 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 16:06:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 16:06:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2024-11-08 16:06:20,528 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 16:06:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2024-11-08 16:06:20,529 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 72 [2024-11-08 16:06:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:20,529 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2024-11-08 16:06:20,529 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 16:06:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2024-11-08 16:06:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:06:20,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:20,531 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 16:06:20,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:06:20,531 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:20,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1002796736, now seen corresponding path program 3 times [2024-11-08 16:06:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845518938] [2024-11-08 16:06:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:21,017 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 16:06:21,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:21,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845518938] [2024-11-08 16:06:21,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845518938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:06:21,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478824885] [2024-11-08 16:06:21,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:06:21,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:21,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:21,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:06:21,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:06:21,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-08 16:06:21,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:06:21,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:06:21,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:06:21,843 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 16:06:21,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:06:21,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478824885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:06:21,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:06:21,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-08 16:06:21,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515416340] [2024-11-08 16:06:21,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:06:21,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:06:21,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:21,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:06:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:06:21,846 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 16:06:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:22,014 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2024-11-08 16:06:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:06:22,015 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 16:06:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:22,016 INFO L225 Difference]: With dead ends: 98 [2024-11-08 16:06:22,016 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 16:06:22,016 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 16:06:22,019 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 16:06:22,021 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 16:06:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 16:06:22,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-08 16:06:22,042 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 16:06:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2024-11-08 16:06:22,046 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 72 [2024-11-08 16:06:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:22,047 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2024-11-08 16:06:22,047 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 16:06:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2024-11-08 16:06:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 16:06:22,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:22,048 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 16:06:22,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:06:22,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:22,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:22,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1229388341, now seen corresponding path program 1 times [2024-11-08 16:06:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535513794] [2024-11-08 16:06:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:22,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:22,857 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 16:06:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535513794] [2024-11-08 16:06:22,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535513794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:06:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80835723] [2024-11-08 16:06:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:22,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:22,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:22,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:06:22,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:06:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:23,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:06:23,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:06:23,459 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 16:06:23,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:06:23,871 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 16:06:23,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80835723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:06:23,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:06:23,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-11-08 16:06:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226055348] [2024-11-08 16:06:23,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:06:23,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:06:23,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:06:23,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:06:23,881 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 16:06:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:24,847 INFO L93 Difference]: Finished difference Result 646 states and 763 transitions. [2024-11-08 16:06:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:06:24,848 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 16:06:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:24,851 INFO L225 Difference]: With dead ends: 646 [2024-11-08 16:06:24,851 INFO L226 Difference]: Without dead ends: 589 [2024-11-08 16:06:24,853 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 16:06:24,854 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 16:06:24,854 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 16:06:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-08 16:06:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 180. [2024-11-08 16:06:24,883 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 16:06:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions. [2024-11-08 16:06:24,884 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 78 [2024-11-08 16:06:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:24,885 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 206 transitions. [2024-11-08 16:06:24,885 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 16:06:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions. [2024-11-08 16:06:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-08 16:06:24,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:24,887 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 16:06:24,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 16:06:25,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:25,092 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:25,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash 66630863, now seen corresponding path program 2 times [2024-11-08 16:06:25,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:25,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291348780] [2024-11-08 16:06:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:25,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:26,307 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 16:06:26,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291348780] [2024-11-08 16:06:26,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291348780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:06:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367433072] [2024-11-08 16:06:26,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:06:26,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:26,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:26,310 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:06:26,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:06:26,625 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:06:26,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:06:26,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 16:06:26,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:06:27,769 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 16:06:27,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:06:28,969 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 16:06:28,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367433072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:06:28,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:06:28,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 25] total 61 [2024-11-08 16:06:28,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793873335] [2024-11-08 16:06:28,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:06:28,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-08 16:06:28,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-08 16:06:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2388, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 16:06:28,975 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 16:06:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:06:31,403 INFO L93 Difference]: Finished difference Result 1342 states and 1585 transitions. [2024-11-08 16:06:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 16:06:31,404 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 16:06:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:06:31,409 INFO L225 Difference]: With dead ends: 1342 [2024-11-08 16:06:31,409 INFO L226 Difference]: Without dead ends: 1237 [2024-11-08 16:06:31,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2567, Invalid=4573, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 16:06:31,413 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2097 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:06:31,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 345 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:06:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-08 16:06:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 348. [2024-11-08 16:06:31,465 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 16:06:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 398 transitions. [2024-11-08 16:06:31,467 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 398 transitions. Word has length 150 [2024-11-08 16:06:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:06:31,467 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 398 transitions. [2024-11-08 16:06:31,468 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 16:06:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 398 transitions. [2024-11-08 16:06:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-08 16:06:31,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:06:31,472 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 16:06:31,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:06:31,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:31,677 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:06:31,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:06:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1160768215, now seen corresponding path program 3 times [2024-11-08 16:06:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:06:31,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556993060] [2024-11-08 16:06:31,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:06:31,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:06:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:06:34,952 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 16:06:34,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:06:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556993060] [2024-11-08 16:06:34,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556993060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:06:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943739464] [2024-11-08 16:06:34,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:06:34,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:06:34,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:06:34,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:06:34,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:06:35,233 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 16:06:35,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:06:35,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 16:06:35,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:06:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6256 trivial. 0 not checked. [2024-11-08 16:06:37,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:06:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6256 trivial. 0 not checked. [2024-11-08 16:06:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943739464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:06:42,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:06:42,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 7, 8] total 39 [2024-11-08 16:06:42,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132948659] [2024-11-08 16:06:42,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:06:42,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 16:06:42,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:06:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 16:06:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1166, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 16:06:42,962 INFO L87 Difference]: Start difference. First operand 348 states and 398 transitions. Second operand has 40 states, 40 states have (on average 5.275) internal successors, (211), 39 states have internal predecessors, (211), 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 16:07:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:05,765 INFO L93 Difference]: Finished difference Result 1509 states and 1848 transitions. [2024-11-08 16:07:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 302 states. [2024-11-08 16:07:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.275) internal successors, (211), 39 states have internal predecessors, (211), 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 16:07:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:05,802 INFO L225 Difference]: With dead ends: 1509 [2024-11-08 16:07:05,802 INFO L226 Difference]: Without dead ends: 1308 [2024-11-08 16:07:05,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55006 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=25511, Invalid=86379, Unknown=0, NotChecked=0, Total=111890 [2024-11-08 16:07:05,817 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1526 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:05,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 327 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 16:07:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2024-11-08 16:07:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 370. [2024-11-08 16:07:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.1436314363143631) internal successors, (422), 369 states have internal predecessors, (422), 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 16:07:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 422 transitions. [2024-11-08 16:07:05,867 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 422 transitions. Word has length 294 [2024-11-08 16:07:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:05,868 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 422 transitions. [2024-11-08 16:07:05,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.275) internal successors, (211), 39 states have internal predecessors, (211), 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 16:07:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 422 transitions. [2024-11-08 16:07:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-08 16:07:05,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:05,876 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 24, 24, 22, 22, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:05,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:07:06,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:07:06,077 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:06,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash -640563585, now seen corresponding path program 4 times [2024-11-08 16:07:06,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:06,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197128884] [2024-11-08 16:07:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:06,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6341 backedges. 3184 proven. 1728 refuted. 0 times theorem prover too weak. 1429 trivial. 0 not checked. [2024-11-08 16:07:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197128884] [2024-11-08 16:07:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197128884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:07:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665967503] [2024-11-08 16:07:09,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:07:09,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:07:09,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:09,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:07:09,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:07:17,665 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:07:17,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:07:17,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 16:07:17,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:07:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6341 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 16:07:20,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:07:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6341 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 16:07:25,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665967503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:07:25,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:07:25,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 49, 49] total 122 [2024-11-08 16:07:25,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199150482] [2024-11-08 16:07:25,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:07:25,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-08 16:07:25,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-08 16:07:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5429, Invalid=9577, Unknown=0, NotChecked=0, Total=15006 [2024-11-08 16:07:25,109 INFO L87 Difference]: Start difference. First operand 370 states and 422 transitions. Second operand has 123 states, 123 states have (on average 5.902439024390244) internal successors, (726), 122 states have internal predecessors, (726), 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 16:07:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:37,239 INFO L93 Difference]: Finished difference Result 4906 states and 5760 transitions. [2024-11-08 16:07:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-08 16:07:37,240 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 5.902439024390244) internal successors, (726), 122 states have internal predecessors, (726), 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 318 [2024-11-08 16:07:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:37,255 INFO L225 Difference]: With dead ends: 4906 [2024-11-08 16:07:37,255 INFO L226 Difference]: Without dead ends: 4689 [2024-11-08 16:07:37,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 540 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9046 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=10082, Invalid=18648, Unknown=0, NotChecked=0, Total=28730 [2024-11-08 16:07:37,259 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4354 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:37,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 701 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 16:07:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4689 states. [2024-11-08 16:07:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4689 to 708. [2024-11-08 16:07:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.1456859971711457) internal successors, (810), 707 states have internal predecessors, (810), 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 16:07:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 810 transitions. [2024-11-08 16:07:37,353 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 810 transitions. Word has length 318 [2024-11-08 16:07:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:37,353 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 810 transitions. [2024-11-08 16:07:37,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 5.902439024390244) internal successors, (726), 122 states have internal predecessors, (726), 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 16:07:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 810 transitions. [2024-11-08 16:07:37,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-11-08 16:07:37,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:37,370 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 47, 47, 47, 47, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:37,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:07:37,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:07:37,571 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:37,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash -729009005, now seen corresponding path program 5 times [2024-11-08 16:07:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618256082] [2024-11-08 16:07:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:37,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26405 backedges. 13299 proven. 6627 refuted. 0 times theorem prover too weak. 6479 trivial. 0 not checked. [2024-11-08 16:07:45,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:45,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618256082] [2024-11-08 16:07:45,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618256082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:07:45,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428410940] [2024-11-08 16:07:45,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:07:45,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:07:45,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:45,748 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:07:45,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c80414-20ed-4940-8e6f-41e32240ba6a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process