./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7483f4c602f1d80c3d31837b57d86164e65df5e6fa201344a2b0a8f22740044 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:18,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:18,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:46:18,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:18,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:18,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:18,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:18,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:18,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:18,633 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:18,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:18,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:18,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:18,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:18,637 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:18,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:18,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:18,638 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:18,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:18,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:18,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:18,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:18,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:18,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:18,642 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:18,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:18,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:18,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:18,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:18,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:18,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:18,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:18,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:18,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:18,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:18,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:18,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:18,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:18,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:18,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:18,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:18,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:18,666 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_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7483f4c602f1d80c3d31837b57d86164e65df5e6fa201344a2b0a8f22740044 [2023-11-26 10:46:18,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:19,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:19,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:19,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:19,040 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:19,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i [2023-11-26 10:46:22,168 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:22,479 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:22,482 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i [2023-11-26 10:46:22,499 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/data/69964ade8/ac757dea840e4349884053e02a9755bc/FLAGeb26d7db6 [2023-11-26 10:46:22,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/data/69964ade8/ac757dea840e4349884053e02a9755bc [2023-11-26 10:46:22,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:22,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:22,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:22,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:22,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:22,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:22,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311dbc76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22, skipping insertion in model container [2023-11-26 10:46:22,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:22,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:22,744 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i[916,929] [2023-11-26 10:46:22,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:22,850 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:22,863 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-20.i[916,929] [2023-11-26 10:46:22,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:22,985 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:22,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22 WrapperNode [2023-11-26 10:46:22,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:22,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:22,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:22,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:22,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,070 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 252 [2023-11-26 10:46:23,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:23,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:23,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:23,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:23,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,114 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:46:23,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:23,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:23,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:23,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:23,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (1/1) ... [2023-11-26 10:46:23,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:23,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:23,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:46:23,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:46:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:46:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:23,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:23,363 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:23,366 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:23,989 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:24,024 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:24,024 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:46:24,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:24 BoogieIcfgContainer [2023-11-26 10:46:24,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:24,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:24,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:24,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:24,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:22" (1/3) ... [2023-11-26 10:46:24,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb5898d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:24, skipping insertion in model container [2023-11-26 10:46:24,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:22" (2/3) ... [2023-11-26 10:46:24,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb5898d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:24, skipping insertion in model container [2023-11-26 10:46:24,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:24" (3/3) ... [2023-11-26 10:46:24,035 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-20.i [2023-11-26 10:46:24,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:24,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:46:24,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:24,120 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31b677f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:24,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:46:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:46:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-26 10:46:24,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:24,146 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:24,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:24,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:24,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1983772906, now seen corresponding path program 1 times [2023-11-26 10:46:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272130552] [2023-11-26 10:46:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272130552] [2023-11-26 10:46:24,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:46:24,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185521052] [2023-11-26 10:46:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:24,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:24,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:24,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:46:24,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-11-26 10:46:24,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185521052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:24,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:24,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894445280] [2023-11-26 10:46:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:24,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:46:24,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:46:24,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:46:24,938 INFO L87 Difference]: Start difference. First operand has 106 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-26 10:46:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:25,001 INFO L93 Difference]: Finished difference Result 211 states and 370 transitions. [2023-11-26 10:46:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:46:25,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 200 [2023-11-26 10:46:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:25,014 INFO L225 Difference]: With dead ends: 211 [2023-11-26 10:46:25,014 INFO L226 Difference]: Without dead ends: 104 [2023-11-26 10:46:25,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:46:25,023 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:25,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:46:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-26 10:46:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-26 10:46:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 71 states have internal predecessors, (103), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:46:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 165 transitions. [2023-11-26 10:46:25,082 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 165 transitions. Word has length 200 [2023-11-26 10:46:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:25,083 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 165 transitions. [2023-11-26 10:46:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-26 10:46:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 165 transitions. [2023-11-26 10:46:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-26 10:46:25,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:25,089 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:25,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:25,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:46:25,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:25,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:25,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1515242788, now seen corresponding path program 1 times [2023-11-26 10:46:25,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:25,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118364716] [2023-11-26 10:46:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:25,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:25,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:25,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284418031] [2023-11-26 10:46:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:25,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:25,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:25,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:25,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:46:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:46:25,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 10:46:25,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118364716] [2023-11-26 10:46:25,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284418031] [2023-11-26 10:46:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284418031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:25,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:25,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777145359] [2023-11-26 10:46:25,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:25,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:25,842 INFO L87 Difference]: Start difference. First operand 104 states and 165 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:46:26,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:26,053 INFO L93 Difference]: Finished difference Result 305 states and 483 transitions. [2023-11-26 10:46:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2023-11-26 10:46:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:26,064 INFO L225 Difference]: With dead ends: 305 [2023-11-26 10:46:26,065 INFO L226 Difference]: Without dead ends: 202 [2023-11-26 10:46:26,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:26,073 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 151 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:26,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 632 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:46:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-26 10:46:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 130. [2023-11-26 10:46:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 97 states have internal predecessors, (145), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:46:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 207 transitions. [2023-11-26 10:46:26,101 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 207 transitions. Word has length 200 [2023-11-26 10:46:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:26,104 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 207 transitions. [2023-11-26 10:46:26,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:46:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 207 transitions. [2023-11-26 10:46:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-26 10:46:26,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:26,116 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:26,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:26,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:26,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:26,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:26,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1943431130, now seen corresponding path program 1 times [2023-11-26 10:46:26,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:26,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711433658] [2023-11-26 10:46:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:26,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:26,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:26,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070197316] [2023-11-26 10:46:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:26,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:26,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:26,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:26,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:46:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:26,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:46:26,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 10:46:27,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:27,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:27,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711433658] [2023-11-26 10:46:27,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:27,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070197316] [2023-11-26 10:46:27,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070197316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:27,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:27,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268085182] [2023-11-26 10:46:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:27,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:27,046 INFO L87 Difference]: Start difference. First operand 130 states and 207 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:46:27,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:27,304 INFO L93 Difference]: Finished difference Result 445 states and 708 transitions. [2023-11-26 10:46:27,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:27,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 201 [2023-11-26 10:46:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:27,309 INFO L225 Difference]: With dead ends: 445 [2023-11-26 10:46:27,309 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 10:46:27,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:27,311 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 156 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:27,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 496 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:46:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 10:46:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 306. [2023-11-26 10:46:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 241 states have (on average 1.4730290456431536) internal successors, (355), 241 states have internal predecessors, (355), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 10:46:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 479 transitions. [2023-11-26 10:46:27,357 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 479 transitions. Word has length 201 [2023-11-26 10:46:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:27,362 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 479 transitions. [2023-11-26 10:46:27,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:46:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 479 transitions. [2023-11-26 10:46:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-26 10:46:27,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:27,368 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:27,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:27,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:27,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:27,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash 565993276, now seen corresponding path program 1 times [2023-11-26 10:46:27,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:27,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214420305] [2023-11-26 10:46:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:27,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:27,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945024655] [2023-11-26 10:46:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:27,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:27,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:46:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:27,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:46:27,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 454 proven. 78 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2023-11-26 10:46:28,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-26 10:46:28,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:28,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214420305] [2023-11-26 10:46:28,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:28,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945024655] [2023-11-26 10:46:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945024655] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:28,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:46:28,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-26 10:46:28,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141450236] [2023-11-26 10:46:28,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:28,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:46:28,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:46:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:46:28,531 INFO L87 Difference]: Start difference. First operand 306 states and 479 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-26 10:46:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:30,810 INFO L93 Difference]: Finished difference Result 1237 states and 1900 transitions. [2023-11-26 10:46:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-26 10:46:30,811 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 202 [2023-11-26 10:46:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:30,822 INFO L225 Difference]: With dead ends: 1237 [2023-11-26 10:46:30,822 INFO L226 Difference]: Without dead ends: 932 [2023-11-26 10:46:30,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=458, Invalid=1522, Unknown=0, NotChecked=0, Total=1980 [2023-11-26 10:46:30,826 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1051 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:30,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 775 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 10:46:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-11-26 10:46:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 352. [2023-11-26 10:46:30,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 285 states have (on average 1.4631578947368422) internal successors, (417), 285 states have internal predecessors, (417), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 10:46:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 541 transitions. [2023-11-26 10:46:30,934 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 541 transitions. Word has length 202 [2023-11-26 10:46:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:30,935 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 541 transitions. [2023-11-26 10:46:30,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-26 10:46:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 541 transitions. [2023-11-26 10:46:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-26 10:46:30,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:30,939 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:30,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:31,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:31,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:31,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1428151430, now seen corresponding path program 1 times [2023-11-26 10:46:31,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:31,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673334785] [2023-11-26 10:46:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:31,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:31,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:31,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285258957] [2023-11-26 10:46:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:31,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:31,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:31,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:31,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:46:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:31,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:46:31,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 872 proven. 114 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-11-26 10:46:32,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:32,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:32,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673334785] [2023-11-26 10:46:32,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285258957] [2023-11-26 10:46:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285258957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:32,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:32,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-26 10:46:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112193644] [2023-11-26 10:46:32,561 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:32,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:32,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:32,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:46:32,564 INFO L87 Difference]: Start difference. First operand 352 states and 541 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-26 10:46:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:33,519 INFO L93 Difference]: Finished difference Result 710 states and 1067 transitions. [2023-11-26 10:46:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 10:46:33,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 202 [2023-11-26 10:46:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:33,523 INFO L225 Difference]: With dead ends: 710 [2023-11-26 10:46:33,523 INFO L226 Difference]: Without dead ends: 359 [2023-11-26 10:46:33,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2023-11-26 10:46:33,526 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 202 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:33,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 522 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:46:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-26 10:46:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 285. [2023-11-26 10:46:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 214 states have (on average 1.355140186915888) internal successors, (290), 214 states have internal predecessors, (290), 62 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 10:46:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 414 transitions. [2023-11-26 10:46:33,600 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 414 transitions. Word has length 202 [2023-11-26 10:46:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:33,601 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 414 transitions. [2023-11-26 10:46:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-26 10:46:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 414 transitions. [2023-11-26 10:46:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 10:46:33,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:33,605 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:33,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:33,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:33,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:33,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1164823111, now seen corresponding path program 1 times [2023-11-26 10:46:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:33,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147120151] [2023-11-26 10:46:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:33,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:33,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:33,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250229896] [2023-11-26 10:46:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:33,884 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:33,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:46:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:34,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-26 10:46:34,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 601 proven. 396 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2023-11-26 10:46:36,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 48 proven. 129 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-11-26 10:46:42,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:42,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147120151] [2023-11-26 10:46:42,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:42,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250229896] [2023-11-26 10:46:42,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250229896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:42,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:46:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 31 [2023-11-26 10:46:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636201289] [2023-11-26 10:46:42,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:42,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-26 10:46:42,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-26 10:46:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2023-11-26 10:46:42,313 INFO L87 Difference]: Start difference. First operand 285 states and 414 transitions. Second operand has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (59), 8 states have call predecessors, (59), 8 states have call successors, (59) [2023-11-26 10:46:45,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 10:46:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:54,865 INFO L93 Difference]: Finished difference Result 876 states and 1225 transitions. [2023-11-26 10:46:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-26 10:46:54,867 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (59), 8 states have call predecessors, (59), 8 states have call successors, (59) Word has length 203 [2023-11-26 10:46:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:54,873 INFO L225 Difference]: With dead ends: 876 [2023-11-26 10:46:54,873 INFO L226 Difference]: Without dead ends: 713 [2023-11-26 10:46:54,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1732, Invalid=6824, Unknown=0, NotChecked=0, Total=8556 [2023-11-26 10:46:54,885 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 544 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:54,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1380 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-26 10:46:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-26 10:46:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 543. [2023-11-26 10:46:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 414 states have (on average 1.326086956521739) internal successors, (549), 417 states have internal predecessors, (549), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (101), 98 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-26 10:46:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 751 transitions. [2023-11-26 10:46:55,047 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 751 transitions. Word has length 203 [2023-11-26 10:46:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:55,048 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 751 transitions. [2023-11-26 10:46:55,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (59), 8 states have call predecessors, (59), 8 states have call successors, (59) [2023-11-26 10:46:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 751 transitions. [2023-11-26 10:46:55,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 10:46:55,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:55,053 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:55,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:55,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:55,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:55,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash 578017097, now seen corresponding path program 1 times [2023-11-26 10:46:55,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:55,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31878911] [2023-11-26 10:46:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:55,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639453991] [2023-11-26 10:46:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:55,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:55,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:55,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:55,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:46:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 10:46:55,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 454 proven. 78 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2023-11-26 10:46:56,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 10:46:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:58,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31878911] [2023-11-26 10:46:58,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:58,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639453991] [2023-11-26 10:46:58,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639453991] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:58,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:58,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 21 [2023-11-26 10:46:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100173428] [2023-11-26 10:46:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:58,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:46:58,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:46:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:46:58,328 INFO L87 Difference]: Start difference. First operand 543 states and 751 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:47:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:03,631 INFO L93 Difference]: Finished difference Result 1358 states and 1937 transitions. [2023-11-26 10:47:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:47:03,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2023-11-26 10:47:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:03,643 INFO L225 Difference]: With dead ends: 1358 [2023-11-26 10:47:03,643 INFO L226 Difference]: Without dead ends: 1013 [2023-11-26 10:47:03,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2023-11-26 10:47:03,647 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 458 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:03,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 781 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-26 10:47:03,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2023-11-26 10:47:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 646. [2023-11-26 10:47:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 517 states have (on average 1.3887814313346227) internal successors, (718), 520 states have internal predecessors, (718), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (101), 98 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-26 10:47:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 920 transitions. [2023-11-26 10:47:03,793 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 920 transitions. Word has length 203 [2023-11-26 10:47:03,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:03,794 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 920 transitions. [2023-11-26 10:47:03,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:47:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 920 transitions. [2023-11-26 10:47:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 10:47:03,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:03,800 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:03,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:04,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:04,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:04,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1010330805, now seen corresponding path program 1 times [2023-11-26 10:47:04,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:04,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478482955] [2023-11-26 10:47:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:04,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:47:04,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731872440] [2023-11-26 10:47:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:04,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:04,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:04,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:04,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:47:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:04,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:47:04,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 10:47:05,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:47:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478482955] [2023-11-26 10:47:05,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:47:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731872440] [2023-11-26 10:47:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731872440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:47:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623550181] [2023-11-26 10:47:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:47:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:47:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:47:05,772 INFO L87 Difference]: Start difference. First operand 646 states and 920 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:47:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:07,988 INFO L93 Difference]: Finished difference Result 1225 states and 1725 transitions. [2023-11-26 10:47:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:47:07,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2023-11-26 10:47:07,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:07,995 INFO L225 Difference]: With dead ends: 1225 [2023-11-26 10:47:07,995 INFO L226 Difference]: Without dead ends: 745 [2023-11-26 10:47:07,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:47:07,998 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 204 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 877 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:47:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-11-26 10:47:08,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 561. [2023-11-26 10:47:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 432 states have (on average 1.2847222222222223) internal successors, (555), 435 states have internal predecessors, (555), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (101), 98 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-26 10:47:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 757 transitions. [2023-11-26 10:47:08,114 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 757 transitions. Word has length 203 [2023-11-26 10:47:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:08,115 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 757 transitions. [2023-11-26 10:47:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:47:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 757 transitions. [2023-11-26 10:47:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-26 10:47:08,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:08,119 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:08,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 10:47:08,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:08,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:08,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1903706220, now seen corresponding path program 1 times [2023-11-26 10:47:08,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:08,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775890674] [2023-11-26 10:47:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:08,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:08,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:47:08,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242099118] [2023-11-26 10:47:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:08,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:08,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:08,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:08,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4588e458-4752-451a-990e-026c3d2a2eb8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:47:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:08,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-26 10:47:08,653 INFO L285 TraceCheckSpWp]: Computing forward predicates...