./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.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_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/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_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/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_52d98dda-2147-4f2b-83f6-ac73bd955077/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 bcba96e12d465ba8f2cd356f8297b415f9e65918ebe10de52c572e6fb77ffa7c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:28,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:28,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:48:28,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:28,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:29,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:29,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:29,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:29,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:29,015 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:29,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:29,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:29,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:29,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:29,018 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:29,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:29,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:29,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:29,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:29,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:29,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:29,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:29,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:29,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:29,029 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:29,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:29,030 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:29,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:29,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:29,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:29,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:29,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:29,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:29,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:29,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:29,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:29,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:29,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:29,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:29,035 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:29,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:29,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:29,038 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_52d98dda-2147-4f2b-83f6-ac73bd955077/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcba96e12d465ba8f2cd356f8297b415f9e65918ebe10de52c572e6fb77ffa7c [2023-11-26 11:48:29,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:29,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:29,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:29,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:29,355 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:29,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2023-11-26 11:48:32,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:32,959 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:32,960 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2023-11-26 11:48:32,974 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/data/e9b7fff33/5d97b463547649cd9841511c9679642b/FLAG814111cb2 [2023-11-26 11:48:32,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/data/e9b7fff33/5d97b463547649cd9841511c9679642b [2023-11-26 11:48:32,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:32,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:32,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:32,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:33,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:33,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:32" (1/1) ... [2023-11-26 11:48:33,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8a677d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33, skipping insertion in model container [2023-11-26 11:48:33,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:32" (1/1) ... [2023-11-26 11:48:33,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:33,217 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_52d98dda-2147-4f2b-83f6-ac73bd955077/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i[919,932] [2023-11-26 11:48:33,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:33,309 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:33,323 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_52d98dda-2147-4f2b-83f6-ac73bd955077/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i[919,932] [2023-11-26 11:48:33,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:33,383 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:33,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33 WrapperNode [2023-11-26 11:48:33,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:33,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:33,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:33,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:33,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,486 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-11-26 11:48:33,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:33,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:33,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:33,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:33,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,520 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:48:33,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:33,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:33,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:33,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:33,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (1/1) ... [2023-11-26 11:48:33,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:33,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:33,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:33,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:48:33,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:48:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:33,795 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:33,797 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:34,325 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:34,373 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:34,374 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:48:34,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:34 BoogieIcfgContainer [2023-11-26 11:48:34,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:34,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:34,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:34,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:34,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:32" (1/3) ... [2023-11-26 11:48:34,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e9b495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:34, skipping insertion in model container [2023-11-26 11:48:34,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:33" (2/3) ... [2023-11-26 11:48:34,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e9b495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:34, skipping insertion in model container [2023-11-26 11:48:34,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:34" (3/3) ... [2023-11-26 11:48:34,386 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2023-11-26 11:48:34,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:34,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:48:34,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:34,470 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;@43851923, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:34,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:48:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:48:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-26 11:48:34,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:34,496 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:34,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:34,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1629222150, now seen corresponding path program 1 times [2023-11-26 11:48:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:34,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746108271] [2023-11-26 11:48:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:34,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:34,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746108271] [2023-11-26 11:48:34,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:48:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383448250] [2023-11-26 11:48:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:34,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:34,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:34,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:34,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:48:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:48:35,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-26 11:48:35,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:35,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383448250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:35,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:35,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:35,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144578361] [2023-11-26 11:48:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:48:35,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:35,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:48:35,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:48:35,211 INFO L87 Difference]: Start difference. First operand has 79 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 11:48:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:35,292 INFO L93 Difference]: Finished difference Result 155 states and 276 transitions. [2023-11-26 11:48:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:48:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2023-11-26 11:48:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:35,307 INFO L225 Difference]: With dead ends: 155 [2023-11-26 11:48:35,307 INFO L226 Difference]: Without dead ends: 77 [2023-11-26 11:48:35,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 168 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 11:48:35,317 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:35,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:35,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-26 11:48:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-26 11:48:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:48:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 120 transitions. [2023-11-26 11:48:35,374 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 120 transitions. Word has length 169 [2023-11-26 11:48:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:35,374 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 120 transitions. [2023-11-26 11:48:35,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 11:48:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 120 transitions. [2023-11-26 11:48:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-26 11:48:35,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:35,380 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:35,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:35,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:48:35,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:35,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:35,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1531718034, now seen corresponding path program 1 times [2023-11-26 11:48:35,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448519064] [2023-11-26 11:48:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:35,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:35,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702586907] [2023-11-26 11:48:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:35,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:35,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:35,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:35,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:48:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:48:35,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-26 11:48:36,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:36,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:36,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448519064] [2023-11-26 11:48:36,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:36,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702586907] [2023-11-26 11:48:36,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702586907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:36,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:36,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:36,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598875574] [2023-11-26 11:48:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:36,064 INFO L87 Difference]: Start difference. First operand 77 states and 120 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:36,123 INFO L93 Difference]: Finished difference Result 180 states and 281 transitions. [2023-11-26 11:48:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2023-11-26 11:48:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:36,128 INFO L225 Difference]: With dead ends: 180 [2023-11-26 11:48:36,128 INFO L226 Difference]: Without dead ends: 104 [2023-11-26 11:48:36,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:36,132 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 33 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:36,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 228 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-26 11:48:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2023-11-26 11:48:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:48:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 135 transitions. [2023-11-26 11:48:36,153 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 135 transitions. Word has length 169 [2023-11-26 11:48:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:36,156 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 135 transitions. [2023-11-26 11:48:36,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 135 transitions. [2023-11-26 11:48:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-26 11:48:36,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:36,161 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:36,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:36,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:36,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:36,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1789883472, now seen corresponding path program 1 times [2023-11-26 11:48:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489789320] [2023-11-26 11:48:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:36,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:36,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836687277] [2023-11-26 11:48:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:36,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:36,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:48:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:48:36,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-26 11:48:36,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:36,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:36,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489789320] [2023-11-26 11:48:36,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:36,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836687277] [2023-11-26 11:48:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836687277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:36,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840021001] [2023-11-26 11:48:36,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:36,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:36,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:36,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:36,742 INFO L87 Difference]: Start difference. First operand 86 states and 135 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:36,831 INFO L93 Difference]: Finished difference Result 253 states and 397 transitions. [2023-11-26 11:48:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2023-11-26 11:48:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:36,842 INFO L225 Difference]: With dead ends: 253 [2023-11-26 11:48:36,842 INFO L226 Difference]: Without dead ends: 168 [2023-11-26 11:48:36,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:36,848 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 109 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:36,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 219 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-26 11:48:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-11-26 11:48:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 111 states have internal predecessors, (155), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-26 11:48:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 259 transitions. [2023-11-26 11:48:36,895 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 259 transitions. Word has length 169 [2023-11-26 11:48:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:36,896 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 259 transitions. [2023-11-26 11:48:36,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 259 transitions. [2023-11-26 11:48:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-26 11:48:36,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:36,899 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:36,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:37,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:37,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:37,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -363749527, now seen corresponding path program 1 times [2023-11-26 11:48:37,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:37,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033586343] [2023-11-26 11:48:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:37,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:37,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462801954] [2023-11-26 11:48:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:37,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:37,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:37,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:48:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:48:37,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2023-11-26 11:48:37,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-26 11:48:38,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033586343] [2023-11-26 11:48:38,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:38,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462801954] [2023-11-26 11:48:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462801954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:38,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:48:38,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-26 11:48:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538448952] [2023-11-26 11:48:38,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:48:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:48:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:38,273 INFO L87 Difference]: Start difference. First operand 166 states and 259 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-26 11:48:38,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:38,902 INFO L93 Difference]: Finished difference Result 500 states and 781 transitions. [2023-11-26 11:48:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:48:38,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) Word has length 170 [2023-11-26 11:48:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:38,907 INFO L225 Difference]: With dead ends: 500 [2023-11-26 11:48:38,907 INFO L226 Difference]: Without dead ends: 335 [2023-11-26 11:48:38,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:48:38,909 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 242 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:38,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 259 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:48:38,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-26 11:48:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 224. [2023-11-26 11:48:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 141 states have (on average 1.3333333333333333) internal successors, (188), 141 states have internal predecessors, (188), 78 states have call successors, (78), 4 states have call predecessors, (78), 4 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-26 11:48:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 344 transitions. [2023-11-26 11:48:38,971 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 344 transitions. Word has length 170 [2023-11-26 11:48:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:38,972 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 344 transitions. [2023-11-26 11:48:38,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-26 11:48:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 344 transitions. [2023-11-26 11:48:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-26 11:48:38,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:38,975 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:38,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:39,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:39,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:39,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:39,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2052693269, now seen corresponding path program 1 times [2023-11-26 11:48:39,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:39,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456027737] [2023-11-26 11:48:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:39,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834748845] [2023-11-26 11:48:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:39,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:39,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:39,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:39,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:48:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:48:39,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-26 11:48:41,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:41,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456027737] [2023-11-26 11:48:41,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:41,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834748845] [2023-11-26 11:48:41,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834748845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:41,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:41,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:48:41,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857342706] [2023-11-26 11:48:41,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:41,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:41,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:41,886 INFO L87 Difference]: Start difference. First operand 224 states and 344 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:42,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:42,579 INFO L93 Difference]: Finished difference Result 456 states and 696 transitions. [2023-11-26 11:48:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:48:42,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2023-11-26 11:48:42,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:42,583 INFO L225 Difference]: With dead ends: 456 [2023-11-26 11:48:42,584 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 11:48:42,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:42,586 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 168 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:42,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 209 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:48:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 11:48:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2023-11-26 11:48:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 186 states have (on average 1.3172043010752688) internal successors, (245), 188 states have internal predecessors, (245), 94 states have call successors, (94), 6 states have call predecessors, (94), 6 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 11:48:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 433 transitions. [2023-11-26 11:48:42,668 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 433 transitions. Word has length 170 [2023-11-26 11:48:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:42,670 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 433 transitions. [2023-11-26 11:48:42,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 433 transitions. [2023-11-26 11:48:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-26 11:48:42,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:42,674 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:42,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 11:48:42,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:42,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:42,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash 535504177, now seen corresponding path program 1 times [2023-11-26 11:48:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:42,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695867103] [2023-11-26 11:48:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:42,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:42,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378156590] [2023-11-26 11:48:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:42,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:42,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:42,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:42,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:48:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:43,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-26 11:48:43,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695867103] [2023-11-26 11:48:43,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:48:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378156590] [2023-11-26 11:48:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378156590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:43,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:43,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653667214] [2023-11-26 11:48:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:43,186 INFO L87 Difference]: Start difference. First operand 287 states and 433 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:43,458 INFO L93 Difference]: Finished difference Result 923 states and 1381 transitions. [2023-11-26 11:48:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:43,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 171 [2023-11-26 11:48:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:43,466 INFO L225 Difference]: With dead ends: 923 [2023-11-26 11:48:43,467 INFO L226 Difference]: Without dead ends: 695 [2023-11-26 11:48:43,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 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 11:48:43,469 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 265 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:43,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 411 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-26 11:48:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 473. [2023-11-26 11:48:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 323 states have (on average 1.3436532507739938) internal successors, (434), 329 states have internal predecessors, (434), 138 states have call successors, (138), 11 states have call predecessors, (138), 11 states have return successors, (138), 132 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-26 11:48:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 710 transitions. [2023-11-26 11:48:43,584 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 710 transitions. Word has length 171 [2023-11-26 11:48:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:43,585 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 710 transitions. [2023-11-26 11:48:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-26 11:48:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 710 transitions. [2023-11-26 11:48:43,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-26 11:48:43,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:43,588 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:43,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:48:43,796 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:43,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:43,797 INFO L85 PathProgramCache]: Analyzing trace with hash 780907543, now seen corresponding path program 1 times [2023-11-26 11:48:43,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:43,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220085120] [2023-11-26 11:48:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:43,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:48:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606090474] [2023-11-26 11:48:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:43,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:43,832 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:43,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d98dda-2147-4f2b-83f6-ac73bd955077/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:48:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-26 11:48:44,031 INFO L285 TraceCheckSpWp]: Computing forward predicates...