./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 acedb713d8fb6ee88e504476b1a8afa9aad0050a29ab1fa7a298d11252db5c53 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:09:17,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:09:17,312 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:09:17,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:09:17,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:09:17,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:09:17,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:09:17,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:09:17,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:09:17,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:09:17,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:09:17,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:09:17,367 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:09:17,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:09:17,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:09:17,370 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:09:17,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:09:17,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:09:17,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:09:17,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:09:17,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:09:17,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:09:17,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:09:17,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:09:17,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:09:17,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:09:17,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:09:17,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:09:17,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:17,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:09:17,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:09:17,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:09:17,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:09:17,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:09:17,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:09:17,382 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:09:17,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:09:17,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:09:17,383 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:09:17,383 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_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acedb713d8fb6ee88e504476b1a8afa9aad0050a29ab1fa7a298d11252db5c53 [2023-11-06 23:09:17,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:09:17,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:09:17,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:09:17,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:09:17,706 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:09:17,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i [2023-11-06 23:09:20,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:09:21,087 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:09:21,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i [2023-11-06 23:09:21,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/data/00034eddc/9762d34517504ab1b252a9602580a32b/FLAG85f218c58 [2023-11-06 23:09:21,114 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/data/00034eddc/9762d34517504ab1b252a9602580a32b [2023-11-06 23:09:21,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:09:21,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:09:21,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:21,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:09:21,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:09:21,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec6a70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21, skipping insertion in model container [2023-11-06 23:09:21,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:09:21,334 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_6f58ac25-fb44-45d8-98af-c0a1e2df3160/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i[916,929] [2023-11-06 23:09:21,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:21,399 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:09:21,412 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_6f58ac25-fb44-45d8-98af-c0a1e2df3160/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i[916,929] [2023-11-06 23:09:21,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:21,463 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:09:21,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21 WrapperNode [2023-11-06 23:09:21,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:21,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:21,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:09:21,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:09:21,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,527 INFO L138 Inliner]: procedures = 29, calls = 141, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 381 [2023-11-06 23:09:21,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:21,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:09:21,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:09:21,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:09:21,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:09:21,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:09:21,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:09:21,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:09:21,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (1/1) ... [2023-11-06 23:09:21,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:21,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:21,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:09:21,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:09:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:09:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-06 23:09:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:09:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-06 23:09:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:09:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-06 23:09:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:09:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:09:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:09:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:09:21,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:09:21,865 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:09:21,868 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:09:22,538 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:09:22,546 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:09:22,546 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:09:22,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:22 BoogieIcfgContainer [2023-11-06 23:09:22,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:09:22,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:09:22,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:09:22,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:09:22,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:09:21" (1/3) ... [2023-11-06 23:09:22,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159b295d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:22, skipping insertion in model container [2023-11-06 23:09:22,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:21" (2/3) ... [2023-11-06 23:09:22,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159b295d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:22, skipping insertion in model container [2023-11-06 23:09:22,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:22" (3/3) ... [2023-11-06 23:09:22,564 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-67.i [2023-11-06 23:09:22,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:09:22,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:09:22,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:09:22,651 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=LoopsAndPotentialCycles, 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;@581d8500, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:09:22,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:09:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 23:09:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 23:09:22,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:22,672 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:22,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:22,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -765524688, now seen corresponding path program 1 times [2023-11-06 23:09:22,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328446982] [2023-11-06 23:09:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:23,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:23,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328446982] [2023-11-06 23:09:23,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 23:09:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885386424] [2023-11-06 23:09:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:23,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:23,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:23,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:23,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:09:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:23,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 23:09:23,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-06 23:09:23,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:23,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885386424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:23,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:23,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451861696] [2023-11-06 23:09:23,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:09:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:09:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:09:23,482 INFO L87 Difference]: Start difference. First operand has 91 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 23:09:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:23,513 INFO L93 Difference]: Finished difference Result 175 states and 268 transitions. [2023-11-06 23:09:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:09:23,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2023-11-06 23:09:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:23,523 INFO L225 Difference]: With dead ends: 175 [2023-11-06 23:09:23,523 INFO L226 Difference]: Without dead ends: 87 [2023-11-06 23:09:23,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:09:23,531 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:23,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-06 23:09:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-06 23:09:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 73 states have (on average 1.36986301369863) internal successors, (100), 73 states have internal predecessors, (100), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 23:09:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2023-11-06 23:09:23,581 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 104 [2023-11-06 23:09:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:23,582 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2023-11-06 23:09:23,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 23:09:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2023-11-06 23:09:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 23:09:23,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:23,587 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:23,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 23:09:23,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:23,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash 469997188, now seen corresponding path program 1 times [2023-11-06 23:09:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:23,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172603697] [2023-11-06 23:09:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:23,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:09:23,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825747440] [2023-11-06 23:09:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:23,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:23,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:23,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:23,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:09:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:24,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:24,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-06 23:09:24,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:24,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172603697] [2023-11-06 23:09:24,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:09:24,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825747440] [2023-11-06 23:09:24,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825747440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:24,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:24,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:24,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938729350] [2023-11-06 23:09:24,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:24,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:24,295 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-06 23:09:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:24,371 INFO L93 Difference]: Finished difference Result 183 states and 262 transitions. [2023-11-06 23:09:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:24,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-06 23:09:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:24,374 INFO L225 Difference]: With dead ends: 183 [2023-11-06 23:09:24,375 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 23:09:24,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:24,377 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 21 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:24,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 359 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 23:09:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2023-11-06 23:09:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 23:09:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2023-11-06 23:09:24,394 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 104 [2023-11-06 23:09:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:24,396 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2023-11-06 23:09:24,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-06 23:09:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2023-11-06 23:09:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 23:09:24,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:24,399 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:24,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:24,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:24,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:24,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1150055558, now seen corresponding path program 1 times [2023-11-06 23:09:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482213090] [2023-11-06 23:09:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:24,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:24,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:09:24,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615600115] [2023-11-06 23:09:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:24,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:24,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:24,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:24,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:09:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:24,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:24,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-06 23:09:25,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482213090] [2023-11-06 23:09:25,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:09:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615600115] [2023-11-06 23:09:25,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615600115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:25,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:25,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854986513] [2023-11-06 23:09:25,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:25,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:25,014 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-06 23:09:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:25,050 INFO L93 Difference]: Finished difference Result 179 states and 254 transitions. [2023-11-06 23:09:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:25,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-06 23:09:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:25,053 INFO L225 Difference]: With dead ends: 179 [2023-11-06 23:09:25,053 INFO L226 Difference]: Without dead ends: 93 [2023-11-06 23:09:25,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:25,055 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 3 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:25,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 356 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-06 23:09:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-11-06 23:09:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 77 states have internal predecessors, (104), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 23:09:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 128 transitions. [2023-11-06 23:09:25,069 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 128 transitions. Word has length 104 [2023-11-06 23:09:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:25,070 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 128 transitions. [2023-11-06 23:09:25,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-06 23:09:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 128 transitions. [2023-11-06 23:09:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 23:09:25,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:25,075 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:25,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:25,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:25,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:25,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1151902600, now seen corresponding path program 1 times [2023-11-06 23:09:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210083701] [2023-11-06 23:09:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:25,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:09:25,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360774572] [2023-11-06 23:09:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:25,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:25,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:25,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:25,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:09:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-06 23:09:25,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:26,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:09:28,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-11-06 23:09:29,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:29,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:29,181 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-06 23:09:30,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-06 23:09:30,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-06 23:09:31,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:31,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-06 23:09:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 67 [2023-11-06 23:09:33,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 104 [2023-11-06 23:09:33,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,484 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 92 [2023-11-06 23:09:33,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2023-11-06 23:09:33,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 92 [2023-11-06 23:09:33,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2023-11-06 23:09:33,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2023-11-06 23:09:33,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 92 [2023-11-06 23:09:33,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:33,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:34,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:34,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:34,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:34,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 92 [2023-11-06 23:09:34,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:34,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 116 [2023-11-06 23:09:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:09:34,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:34,744 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_398 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse0 (mod (+ (select (select .cse1 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (select (select .cse1 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset)) 65536))) (or (< 32767 .cse0) (not (= (+ 65536 (select (select .cse1 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)) .cse0)))))) (forall ((v_ArrVal_398 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse2 (select (select .cse4 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)) (.cse3 (mod (+ (select (select .cse4 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (select (select .cse4 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset)) 65536))) (or (= (+ 65536 .cse2) .cse3) (= .cse2 .cse3))))) (forall ((v_ArrVal_398 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse6 (mod (+ (select (select .cse5 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (select (select .cse5 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset)) 65536))) (or (= (+ 65536 (select (select .cse5 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)) .cse6) (< .cse6 32768)))))) is different from false [2023-11-06 23:09:34,961 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_395 (Array Int Int)) (v_ArrVal_397 (Array Int Int)) (v_ArrVal_396 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (let ((.cse1 (store (store (store (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_396) c_~var_1_13_Pointer~0.base v_ArrVal_397) c_~var_1_14_Pointer~0.base v_ArrVal_395) c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse0 (mod (+ (select (select .cse1 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (select (select .cse1 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) 65536))) (or (< 32767 .cse0) (not (= .cse0 (+ 65536 (select (select .cse1 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)))))))) (forall ((v_ArrVal_395 (Array Int Int)) (v_ArrVal_397 (Array Int Int)) (v_ArrVal_396 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (let ((.cse3 (store (store (store (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_396) c_~var_1_13_Pointer~0.base v_ArrVal_397) c_~var_1_14_Pointer~0.base v_ArrVal_395) c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse2 (mod (+ (select (select .cse3 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (select (select .cse3 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) 65536))) (or (< .cse2 32768) (= .cse2 (+ 65536 (select (select .cse3 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))))))) (forall ((v_ArrVal_395 (Array Int Int)) (v_ArrVal_397 (Array Int Int)) (v_ArrVal_396 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (let ((.cse6 (store (store (store (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_396) c_~var_1_13_Pointer~0.base v_ArrVal_397) c_~var_1_14_Pointer~0.base v_ArrVal_395) c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse5 (mod (+ (select (select .cse6 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (select (select .cse6 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) 65536)) (.cse4 (select (select .cse6 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))) (or (= .cse4 .cse5) (= .cse5 (+ 65536 .cse4))))))) is different from false [2023-11-06 23:09:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:49,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210083701] [2023-11-06 23:09:49,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:09:49,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360774572] [2023-11-06 23:09:49,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360774572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:49,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:49,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-11-06 23:09:49,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718652430] [2023-11-06 23:09:49,242 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:49,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 23:09:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 23:09:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=970, Unknown=14, NotChecked=130, Total=1260 [2023-11-06 23:09:49,245 INFO L87 Difference]: Start difference. First operand 91 states and 128 transitions. Second operand has 28 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 7 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-06 23:09:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:54,926 INFO L93 Difference]: Finished difference Result 322 states and 449 transitions. [2023-11-06 23:09:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 23:09:54,930 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 7 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 104 [2023-11-06 23:09:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:54,933 INFO L225 Difference]: With dead ends: 322 [2023-11-06 23:09:54,933 INFO L226 Difference]: Without dead ends: 234 [2023-11-06 23:09:54,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=521, Invalid=2443, Unknown=14, NotChecked=214, Total=3192 [2023-11-06 23:09:54,941 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 936 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:54,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 989 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 23:09:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-06 23:09:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 116. [2023-11-06 23:09:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 100 states have (on average 1.36) internal successors, (136), 100 states have internal predecessors, (136), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 23:09:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2023-11-06 23:09:55,001 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 160 transitions. Word has length 104 [2023-11-06 23:09:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:55,004 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 160 transitions. [2023-11-06 23:09:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 7 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-06 23:09:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 160 transitions. [2023-11-06 23:09:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 23:09:55,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:55,012 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:55,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:55,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:55,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:55,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash -653535734, now seen corresponding path program 1 times [2023-11-06 23:09:55,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:55,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377787097] [2023-11-06 23:09:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:55,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:09:55,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753884354] [2023-11-06 23:09:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:55,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:55,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:55,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:55,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:09:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:55,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:09:55,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-06 23:09:55,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377787097] [2023-11-06 23:09:55,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:09:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753884354] [2023-11-06 23:09:55,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753884354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:55,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:55,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397092143] [2023-11-06 23:09:55,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:55,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:55,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:55,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:55,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:55,550 INFO L87 Difference]: Start difference. First operand 116 states and 160 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-06 23:09:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:55,590 INFO L93 Difference]: Finished difference Result 264 states and 363 transitions. [2023-11-06 23:09:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:55,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-06 23:09:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:55,595 INFO L225 Difference]: With dead ends: 264 [2023-11-06 23:09:55,595 INFO L226 Difference]: Without dead ends: 151 [2023-11-06 23:09:55,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:55,602 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 59 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:55,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-06 23:09:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 114. [2023-11-06 23:09:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.346938775510204) internal successors, (132), 98 states have internal predecessors, (132), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 23:09:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 156 transitions. [2023-11-06 23:09:55,638 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 156 transitions. Word has length 104 [2023-11-06 23:09:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:55,639 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 156 transitions. [2023-11-06 23:09:55,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-06 23:09:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 156 transitions. [2023-11-06 23:09:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 23:09:55,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:55,641 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:55,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:55,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:55,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:55,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1210239945, now seen corresponding path program 1 times [2023-11-06 23:09:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:55,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102672501] [2023-11-06 23:09:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:55,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:09:55,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297365489] [2023-11-06 23:09:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:55,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:55,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:55,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:55,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f58ac25-fb44-45d8-98af-c0a1e2df3160/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:09:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:56,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 23:09:56,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:57,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 23:09:57,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,633 INFO L322 Elim1Store]: treesize reduction 129, result has 33.2 percent of original size [2023-11-06 23:09:57,633 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 227 [2023-11-06 23:09:57,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 23:09:57,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 23:09:57,790 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 23:09:57,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 23:09:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:09:57,914 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:09:57,918 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:09:57,918 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:09:57,927 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 106 [2023-11-06 23:09:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:57,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,067 INFO L322 Elim1Store]: treesize reduction 48, result has 26.2 percent of original size [2023-11-06 23:09:58,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 141 treesize of output 137 [2023-11-06 23:09:58,188 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 23:09:58,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-06 23:09:58,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,419 INFO L322 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-11-06 23:09:58,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 52 [2023-11-06 23:09:58,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:58,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:59,007 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 23:09:59,007 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34 [2023-11-06 23:09:59,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-06 23:09:59,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:59,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2023-11-06 23:09:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-06 23:09:59,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:59,415 INFO L322 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2023-11-06 23:09:59,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 98 [2023-11-06 23:09:59,965 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:09:59,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29167618 treesize of output 27336726 [2023-11-06 23:10:02,728 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:10:02,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24054 treesize of output 22014 [2023-11-06 23:10:03,300 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:10:03,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23474 treesize of output 22708 [2023-11-06 23:10:04,512 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:10:04,514 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24676 treesize of output 23264