./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.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_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/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_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/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_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/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 e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:02,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:02,372 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:58:02,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:02,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:02,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:02,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:02,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:02,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:02,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:02,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:02,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:02,419 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:02,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:02,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:58:02,440 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:02,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:02,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:02,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:02,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:58:02,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:02,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:58:02,446 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:02,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:58:02,448 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:02,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:02,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:02,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:02,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:02,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:02,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:02,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:58:02,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:02,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:02,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:02,459 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:58:02,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:02,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:02,461 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:02,461 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_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b [2023-11-06 21:58:02,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:02,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:02,854 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:02,856 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:02,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2023-11-06 21:58:06,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:58:06,600 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:58:06,600 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2023-11-06 21:58:06,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/data/84484bcb9/7330e198e5154a7fa98d69c095ce3f40/FLAG36f79b823 [2023-11-06 21:58:06,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/data/84484bcb9/7330e198e5154a7fa98d69c095ce3f40 [2023-11-06 21:58:06,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:58:06,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:58:06,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:06,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:58:06,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:58:06,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:06" (1/1) ... [2023-11-06 21:58:06,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19123ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:06, skipping insertion in model container [2023-11-06 21:58:06,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:06" (1/1) ... [2023-11-06 21:58:06,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:58:06,940 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_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i[916,929] [2023-11-06 21:58:07,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:07,146 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:58:07,159 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_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i[916,929] [2023-11-06 21:58:07,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:07,254 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:58:07,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07 WrapperNode [2023-11-06 21:58:07,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:07,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:07,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:58:07,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:58:07,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,367 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 411 [2023-11-06 21:58:07,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:07,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:58:07,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:58:07,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:58:07,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:58:07,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:58:07,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:58:07,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:58:07,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (1/1) ... [2023-11-06 21:58:07,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:07,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:07,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:58:07,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:58:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:58:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:58:07,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:58:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:58:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:58:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:58:07,706 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:58:07,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:58:08,691 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:58:08,699 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:58:08,700 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:58:08,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:08 BoogieIcfgContainer [2023-11-06 21:58:08,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:58:08,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:58:08,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:58:08,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:58:08,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:06" (1/3) ... [2023-11-06 21:58:08,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41071b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:08, skipping insertion in model container [2023-11-06 21:58:08,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:07" (2/3) ... [2023-11-06 21:58:08,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41071b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:08, skipping insertion in model container [2023-11-06 21:58:08,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:08" (3/3) ... [2023-11-06 21:58:08,723 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-29.i [2023-11-06 21:58:08,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:58:08,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:58:08,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:08,812 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;@195d1605, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:08,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:58:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 117 states have (on average 1.4871794871794872) internal successors, (174), 118 states have internal predecessors, (174), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-06 21:58:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:08,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:08,847 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:08,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:08,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1497187027, now seen corresponding path program 1 times [2023-11-06 21:58:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:08,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315010238] [2023-11-06 21:58:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315010238] [2023-11-06 21:58:09,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 21:58:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493805923] [2023-11-06 21:58:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:09,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:09,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:09,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:58:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:58:09,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2023-11-06 21:58:09,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:09,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493805923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:09,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:09,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482042199] [2023-11-06 21:58:09,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:09,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:58:09,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:58:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:58:09,859 INFO L87 Difference]: Start difference. First operand has 175 states, 117 states have (on average 1.4871794871794872) internal successors, (174), 118 states have internal predecessors, (174), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-06 21:58:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:09,916 INFO L93 Difference]: Finished difference Result 343 states and 617 transitions. [2023-11-06 21:58:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:58:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2023-11-06 21:58:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:09,929 INFO L225 Difference]: With dead ends: 343 [2023-11-06 21:58:09,930 INFO L226 Difference]: Without dead ends: 171 [2023-11-06 21:58:09,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 359 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 21:58:09,939 INFO L413 NwaCegarLoop]: 277 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, 277 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 21:58:09,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:58:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-06 21:58:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-06 21:58:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 114 states have internal predecessors, (167), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-06 21:58:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 277 transitions. [2023-11-06 21:58:10,010 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 277 transitions. Word has length 360 [2023-11-06 21:58:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:10,011 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 277 transitions. [2023-11-06 21:58:10,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-06 21:58:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 277 transitions. [2023-11-06 21:58:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:10,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:10,022 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:10,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:10,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:10,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:10,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:10,231 INFO L85 PathProgramCache]: Analyzing trace with hash -579237445, now seen corresponding path program 1 times [2023-11-06 21:58:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:10,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623269820] [2023-11-06 21:58:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:10,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:10,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:10,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515255323] [2023-11-06 21:58:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:10,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:10,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:10,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:10,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:58:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:58:10,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-06 21:58:11,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:11,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623269820] [2023-11-06 21:58:11,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515255323] [2023-11-06 21:58:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515255323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:11,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:11,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523899581] [2023-11-06 21:58:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:11,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:11,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:11,480 INFO L87 Difference]: Start difference. First operand 171 states and 277 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-06 21:58:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:11,666 INFO L93 Difference]: Finished difference Result 507 states and 825 transitions. [2023-11-06 21:58:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:11,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2023-11-06 21:58:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:11,680 INFO L225 Difference]: With dead ends: 507 [2023-11-06 21:58:11,683 INFO L226 Difference]: Without dead ends: 339 [2023-11-06 21:58:11,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 357 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 21:58:11,690 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 184 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:11,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 802 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:58:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-06 21:58:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2023-11-06 21:58:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 224 states have (on average 1.46875) internal successors, (329), 224 states have internal predecessors, (329), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-06 21:58:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 549 transitions. [2023-11-06 21:58:11,796 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 549 transitions. Word has length 360 [2023-11-06 21:58:11,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:11,798 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 549 transitions. [2023-11-06 21:58:11,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-06 21:58:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 549 transitions. [2023-11-06 21:58:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:11,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:11,806 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:11,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:12,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:12,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1423242947, now seen corresponding path program 1 times [2023-11-06 21:58:12,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235075451] [2023-11-06 21:58:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:12,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:12,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20889028] [2023-11-06 21:58:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:12,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:12,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:12,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:12,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:58:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:12,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:58:12,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2496 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-06 21:58:13,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235075451] [2023-11-06 21:58:13,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:13,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20889028] [2023-11-06 21:58:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20889028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:13,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:58:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096140871] [2023-11-06 21:58:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:13,622 INFO L87 Difference]: Start difference. First operand 337 states and 549 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-06 21:58:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:14,121 INFO L93 Difference]: Finished difference Result 1007 states and 1645 transitions. [2023-11-06 21:58:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:58:14,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2023-11-06 21:58:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:14,132 INFO L225 Difference]: With dead ends: 1007 [2023-11-06 21:58:14,132 INFO L226 Difference]: Without dead ends: 673 [2023-11-06 21:58:14,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:58:14,135 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 202 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:14,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1132 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:58:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-11-06 21:58:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 671. [2023-11-06 21:58:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 446 states have (on average 1.4708520179372198) internal successors, (656), 446 states have internal predecessors, (656), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-11-06 21:58:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1096 transitions. [2023-11-06 21:58:14,249 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1096 transitions. Word has length 360 [2023-11-06 21:58:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:14,251 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1096 transitions. [2023-11-06 21:58:14,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-06 21:58:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1096 transitions. [2023-11-06 21:58:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:14,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:14,259 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:14,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:14,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:14,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:14,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1282694337, now seen corresponding path program 1 times [2023-11-06 21:58:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:14,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21873034] [2023-11-06 21:58:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:14,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:14,576 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:14,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393961699] [2023-11-06 21:58:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:14,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:14,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:14,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:14,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:58:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:14,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:58:14,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-06 21:58:15,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:15,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21873034] [2023-11-06 21:58:15,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393961699] [2023-11-06 21:58:15,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393961699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:15,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:15,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:15,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010062022] [2023-11-06 21:58:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:15,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:15,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:15,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:15,041 INFO L87 Difference]: Start difference. First operand 671 states and 1096 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-06 21:58:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:15,142 INFO L93 Difference]: Finished difference Result 1619 states and 2634 transitions. [2023-11-06 21:58:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:15,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2023-11-06 21:58:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:15,151 INFO L225 Difference]: With dead ends: 1619 [2023-11-06 21:58:15,152 INFO L226 Difference]: Without dead ends: 951 [2023-11-06 21:58:15,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 358 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 21:58:15,158 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 99 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 615 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 21:58:15,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 615 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:58:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-11-06 21:58:15,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 945. [2023-11-06 21:58:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 708 states have (on average 1.5197740112994351) internal successors, (1076), 712 states have internal predecessors, (1076), 228 states have call successors, (228), 8 states have call predecessors, (228), 8 states have return successors, (228), 224 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-06 21:58:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1532 transitions. [2023-11-06 21:58:15,321 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1532 transitions. Word has length 360 [2023-11-06 21:58:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:15,325 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1532 transitions. [2023-11-06 21:58:15,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-06 21:58:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1532 transitions. [2023-11-06 21:58:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:15,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:15,336 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:15,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:15,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:15,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash -859047615, now seen corresponding path program 1 times [2023-11-06 21:58:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204087762] [2023-11-06 21:58:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:15,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:15,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282033383] [2023-11-06 21:58:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:15,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:15,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:15,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:15,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:58:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:15,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:58:15,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-06 21:58:17,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:17,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:17,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204087762] [2023-11-06 21:58:17,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:17,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282033383] [2023-11-06 21:58:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282033383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:17,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:17,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:17,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756880186] [2023-11-06 21:58:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:17,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:17,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:17,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:17,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:58:17,534 INFO L87 Difference]: Start difference. First operand 945 states and 1532 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-06 21:58:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:19,059 INFO L93 Difference]: Finished difference Result 4755 states and 7653 transitions. [2023-11-06 21:58:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:58:19,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2023-11-06 21:58:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:19,115 INFO L225 Difference]: With dead ends: 4755 [2023-11-06 21:58:19,115 INFO L226 Difference]: Without dead ends: 3813 [2023-11-06 21:58:19,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:58:19,120 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 710 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:19,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1503 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:58:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2023-11-06 21:58:19,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3561. [2023-11-06 21:58:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2768 states have (on average 1.5289017341040463) internal successors, (4232), 2792 states have internal predecessors, (4232), 756 states have call successors, (756), 36 states have call predecessors, (756), 36 states have return successors, (756), 732 states have call predecessors, (756), 756 states have call successors, (756) [2023-11-06 21:58:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5744 transitions. [2023-11-06 21:58:19,551 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5744 transitions. Word has length 360 [2023-11-06 21:58:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:19,552 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5744 transitions. [2023-11-06 21:58:19,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-06 21:58:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5744 transitions. [2023-11-06 21:58:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:19,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:19,605 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:19,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:19,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:19,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:19,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:19,814 INFO L85 PathProgramCache]: Analyzing trace with hash -836415361, now seen corresponding path program 1 times [2023-11-06 21:58:19,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:19,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419685962] [2023-11-06 21:58:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:19,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741174973] [2023-11-06 21:58:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:19,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:19,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:19,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:58:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:58:20,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2032 proven. 33 refuted. 0 times theorem prover too weak. 3875 trivial. 0 not checked. [2023-11-06 21:58:20,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-11-06 21:58:21,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419685962] [2023-11-06 21:58:21,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741174973] [2023-11-06 21:58:21,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741174973] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:21,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:21,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-06 21:58:21,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370876387] [2023-11-06 21:58:21,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:58:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:58:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:58:21,301 INFO L87 Difference]: Start difference. First operand 3561 states and 5744 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2023-11-06 21:58:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:23,938 INFO L93 Difference]: Finished difference Result 14471 states and 23105 transitions. [2023-11-06 21:58:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 21:58:23,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 360 [2023-11-06 21:58:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:24,030 INFO L225 Difference]: With dead ends: 14471 [2023-11-06 21:58:24,031 INFO L226 Difference]: Without dead ends: 10913 [2023-11-06 21:58:24,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 709 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2023-11-06 21:58:24,048 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 814 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:24,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1509 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 21:58:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10913 states. [2023-11-06 21:58:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10913 to 4179. [2023-11-06 21:58:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 3269 states have (on average 1.5255429795044355) internal successors, (4987), 3296 states have internal predecessors, (4987), 856 states have call successors, (856), 53 states have call predecessors, (856), 53 states have return successors, (856), 829 states have call predecessors, (856), 856 states have call successors, (856) [2023-11-06 21:58:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6699 transitions. [2023-11-06 21:58:25,379 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6699 transitions. Word has length 360 [2023-11-06 21:58:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:25,380 INFO L495 AbstractCegarLoop]: Abstraction has 4179 states and 6699 transitions. [2023-11-06 21:58:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2023-11-06 21:58:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6699 transitions. [2023-11-06 21:58:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:25,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:25,391 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:25,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:25,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 21:58:25,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:25,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash -413713535, now seen corresponding path program 1 times [2023-11-06 21:58:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848100455] [2023-11-06 21:58:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:25,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:25,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354254567] [2023-11-06 21:58:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:25,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:25,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:25,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:25,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:58:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:26,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 21:58:26,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3805 proven. 273 refuted. 0 times theorem prover too weak. 1862 trivial. 0 not checked. [2023-11-06 21:58:27,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 195 proven. 282 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2023-11-06 21:58:28,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:28,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848100455] [2023-11-06 21:58:28,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:28,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354254567] [2023-11-06 21:58:28,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354254567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:28,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:28,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-06 21:58:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780042574] [2023-11-06 21:58:28,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:28,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 21:58:28,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 21:58:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-11-06 21:58:28,612 INFO L87 Difference]: Start difference. First operand 4179 states and 6699 transitions. Second operand has 26 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 9 states have call successors, (91), 5 states have call predecessors, (91), 9 states have return successors, (92), 7 states have call predecessors, (92), 9 states have call successors, (92) [2023-11-06 21:58:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:33,976 INFO L93 Difference]: Finished difference Result 19613 states and 30494 transitions. [2023-11-06 21:58:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-06 21:58:33,977 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 9 states have call successors, (91), 5 states have call predecessors, (91), 9 states have return successors, (92), 7 states have call predecessors, (92), 9 states have call successors, (92) Word has length 360 [2023-11-06 21:58:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:34,084 INFO L225 Difference]: With dead ends: 19613 [2023-11-06 21:58:34,085 INFO L226 Difference]: Without dead ends: 15510 [2023-11-06 21:58:34,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1773, Invalid=5199, Unknown=0, NotChecked=0, Total=6972 [2023-11-06 21:58:34,104 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1838 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:34,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 2039 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 21:58:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15510 states. [2023-11-06 21:58:35,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15510 to 6629. [2023-11-06 21:58:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6629 states, 5583 states have (on average 1.5445101200071647) internal successors, (8623), 5618 states have internal predecessors, (8623), 928 states have call successors, (928), 117 states have call predecessors, (928), 117 states have return successors, (928), 893 states have call predecessors, (928), 928 states have call successors, (928) [2023-11-06 21:58:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 10479 transitions. [2023-11-06 21:58:35,495 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 10479 transitions. Word has length 360 [2023-11-06 21:58:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:35,496 INFO L495 AbstractCegarLoop]: Abstraction has 6629 states and 10479 transitions. [2023-11-06 21:58:35,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 9 states have call successors, (91), 5 states have call predecessors, (91), 9 states have return successors, (92), 7 states have call predecessors, (92), 9 states have call successors, (92) [2023-11-06 21:58:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 10479 transitions. [2023-11-06 21:58:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 21:58:35,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:35,510 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:35,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:35,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 21:58:35,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:35,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash -914924357, now seen corresponding path program 1 times [2023-11-06 21:58:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:35,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279921339] [2023-11-06 21:58:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:35,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:35,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:35,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467655608] [2023-11-06 21:58:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:35,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:35,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:35,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:35,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:58:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:36,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 21:58:36,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3998 proven. 207 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2023-11-06 21:58:38,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-11-06 21:58:38,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:38,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279921339] [2023-11-06 21:58:38,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:38,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467655608] [2023-11-06 21:58:38,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467655608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:38,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:38,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 21 [2023-11-06 21:58:38,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533156007] [2023-11-06 21:58:38,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:38,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 21:58:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:38,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 21:58:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:58:38,893 INFO L87 Difference]: Start difference. First operand 6629 states and 10479 transitions. Second operand has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 6 states have call successors, (110), 5 states have call predecessors, (110), 8 states have return successors, (110), 6 states have call predecessors, (110), 6 states have call successors, (110) [2023-11-06 21:58:41,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-06 21:58:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:44,731 INFO L93 Difference]: Finished difference Result 32885 states and 51798 transitions. [2023-11-06 21:58:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 21:58:44,732 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 6 states have call successors, (110), 5 states have call predecessors, (110), 8 states have return successors, (110), 6 states have call predecessors, (110), 6 states have call successors, (110) Word has length 360 [2023-11-06 21:58:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:44,808 INFO L225 Difference]: With dead ends: 32885 [2023-11-06 21:58:44,808 INFO L226 Difference]: Without dead ends: 26348 [2023-11-06 21:58:44,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 21:58:44,826 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 718 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:44,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1778 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 21:58:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26348 states. [2023-11-06 21:58:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26348 to 20822. [2023-11-06 21:58:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20822 states, 17946 states have (on average 1.5353282068427505) internal successors, (27553), 18069 states have internal predecessors, (27553), 2500 states have call successors, (2500), 375 states have call predecessors, (2500), 375 states have return successors, (2500), 2377 states have call predecessors, (2500), 2500 states have call successors, (2500) [2023-11-06 21:58:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20822 states to 20822 states and 32553 transitions. [2023-11-06 21:58:47,637 INFO L78 Accepts]: Start accepts. Automaton has 20822 states and 32553 transitions. Word has length 360 [2023-11-06 21:58:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:47,638 INFO L495 AbstractCegarLoop]: Abstraction has 20822 states and 32553 transitions. [2023-11-06 21:58:47,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 6 states have call successors, (110), 5 states have call predecessors, (110), 8 states have return successors, (110), 6 states have call predecessors, (110), 6 states have call successors, (110) [2023-11-06 21:58:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 20822 states and 32553 transitions. [2023-11-06 21:58:47,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-06 21:58:47,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:47,662 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:47,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:47,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:47,871 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:47,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash -606363217, now seen corresponding path program 1 times [2023-11-06 21:58:47,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:47,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297235] [2023-11-06 21:58:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:47,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:47,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394957294] [2023-11-06 21:58:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:47,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:47,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:47,944 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:47,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:58:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:58,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 21:58:58,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 4249 proven. 102 refuted. 0 times theorem prover too weak. 1589 trivial. 0 not checked. [2023-11-06 21:59:01,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 153 proven. 9 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-11-06 21:59:03,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297235] [2023-11-06 21:59:03,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:59:03,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394957294] [2023-11-06 21:59:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394957294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:03,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:59:03,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11] total 31 [2023-11-06 21:59:03,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132961994] [2023-11-06 21:59:03,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 21:59:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 21:59:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-11-06 21:59:03,383 INFO L87 Difference]: Start difference. First operand 20822 states and 32553 transitions. Second operand has 31 states, 31 states have (on average 6.129032258064516) internal successors, (190), 29 states have internal predecessors, (190), 8 states have call successors, (110), 7 states have call predecessors, (110), 10 states have return successors, (110), 8 states have call predecessors, (110), 8 states have call successors, (110) [2023-11-06 21:59:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:19,116 INFO L93 Difference]: Finished difference Result 64540 states and 99730 transitions. [2023-11-06 21:59:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-06 21:59:19,117 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.129032258064516) internal successors, (190), 29 states have internal predecessors, (190), 8 states have call successors, (110), 7 states have call predecessors, (110), 10 states have return successors, (110), 8 states have call predecessors, (110), 8 states have call successors, (110) Word has length 361 [2023-11-06 21:59:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:19,275 INFO L225 Difference]: With dead ends: 64540 [2023-11-06 21:59:19,275 INFO L226 Difference]: Without dead ends: 43822 [2023-11-06 21:59:19,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2745 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1822, Invalid=7108, Unknown=0, NotChecked=0, Total=8930 [2023-11-06 21:59:19,333 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 3538 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 1582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3594 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 5904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1582 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:19,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3594 Valid, 2942 Invalid, 5904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1582 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-06 21:59:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43822 states. [2023-11-06 21:59:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43822 to 23114. [2023-11-06 21:59:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23114 states, 20187 states have (on average 1.5332144449398128) internal successors, (30951), 20300 states have internal predecessors, (30951), 2467 states have call successors, (2467), 459 states have call predecessors, (2467), 459 states have return successors, (2467), 2354 states have call predecessors, (2467), 2467 states have call successors, (2467) [2023-11-06 21:59:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23114 states to 23114 states and 35885 transitions. [2023-11-06 21:59:22,498 INFO L78 Accepts]: Start accepts. Automaton has 23114 states and 35885 transitions. Word has length 361 [2023-11-06 21:59:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:22,499 INFO L495 AbstractCegarLoop]: Abstraction has 23114 states and 35885 transitions. [2023-11-06 21:59:22,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.129032258064516) internal successors, (190), 29 states have internal predecessors, (190), 8 states have call successors, (110), 7 states have call predecessors, (110), 10 states have return successors, (110), 8 states have call predecessors, (110), 8 states have call successors, (110) [2023-11-06 21:59:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 23114 states and 35885 transitions. [2023-11-06 21:59:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-06 21:59:22,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:22,532 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:22,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:22,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:22,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:22,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash -930338099, now seen corresponding path program 1 times [2023-11-06 21:59:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:22,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078963492] [2023-11-06 21:59:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:22,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:59:22,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092400150] [2023-11-06 21:59:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:22,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:22,818 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:22,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:59:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:59:23,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2604 proven. 111 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2023-11-06 21:59:24,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 51 proven. 111 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-11-06 21:59:25,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078963492] [2023-11-06 21:59:25,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:59:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092400150] [2023-11-06 21:59:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092400150] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:25,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:59:25,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-06 21:59:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007997388] [2023-11-06 21:59:25,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:25,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:59:25,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:25,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:59:25,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:59:25,147 INFO L87 Difference]: Start difference. First operand 23114 states and 35885 transitions. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 4 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2023-11-06 21:59:28,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:28,691 INFO L93 Difference]: Finished difference Result 47932 states and 74467 transitions. [2023-11-06 21:59:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:59:28,692 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 4 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) Word has length 361 [2023-11-06 21:59:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:28,745 INFO L225 Difference]: With dead ends: 47932 [2023-11-06 21:59:28,745 INFO L226 Difference]: Without dead ends: 24946 [2023-11-06 21:59:28,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:59:28,772 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1598 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:28,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1051 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:59:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24946 states. [2023-11-06 21:59:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24946 to 16346. [2023-11-06 21:59:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16346 states, 14395 states have (on average 1.5421326849600556) internal successors, (22199), 14460 states have internal predecessors, (22199), 1635 states have call successors, (1635), 315 states have call predecessors, (1635), 315 states have return successors, (1635), 1570 states have call predecessors, (1635), 1635 states have call successors, (1635) [2023-11-06 21:59:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16346 states to 16346 states and 25469 transitions. [2023-11-06 21:59:31,137 INFO L78 Accepts]: Start accepts. Automaton has 16346 states and 25469 transitions. Word has length 361 [2023-11-06 21:59:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:31,138 INFO L495 AbstractCegarLoop]: Abstraction has 16346 states and 25469 transitions. [2023-11-06 21:59:31,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 4 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2023-11-06 21:59:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16346 states and 25469 transitions. [2023-11-06 21:59:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-06 21:59:31,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:31,159 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:31,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:31,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 21:59:31,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:31,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:31,370 INFO L85 PathProgramCache]: Analyzing trace with hash 762241241, now seen corresponding path program 1 times [2023-11-06 21:59:31,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:31,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340218604] [2023-11-06 21:59:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:31,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:31,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:59:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576118293] [2023-11-06 21:59:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:31,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:31,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:31,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:59:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:33,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 21:59:33,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2968 proven. 69 refuted. 0 times theorem prover too weak. 2903 trivial. 0 not checked. [2023-11-06 21:59:35,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340218604] [2023-11-06 21:59:38,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:59:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576118293] [2023-11-06 21:59:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576118293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:38,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:38,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-06 21:59:38,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140103955] [2023-11-06 21:59:38,451 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:38,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:38,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:38,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:38,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:59:38,454 INFO L87 Difference]: Start difference. First operand 16346 states and 25469 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-06 21:59:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:40,851 INFO L93 Difference]: Finished difference Result 34549 states and 53851 transitions. [2023-11-06 21:59:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:59:40,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 362 [2023-11-06 21:59:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:40,882 INFO L225 Difference]: With dead ends: 34549 [2023-11-06 21:59:40,882 INFO L226 Difference]: Without dead ends: 18331 [2023-11-06 21:59:40,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:59:40,903 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 360 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:40,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 963 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:59:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18331 states. [2023-11-06 21:59:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18331 to 16381. [2023-11-06 21:59:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16381 states, 14423 states have (on average 1.5416348887194065) internal successors, (22235), 14487 states have internal predecessors, (22235), 1639 states have call successors, (1639), 318 states have call predecessors, (1639), 318 states have return successors, (1639), 1575 states have call predecessors, (1639), 1639 states have call successors, (1639) [2023-11-06 21:59:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16381 states to 16381 states and 25513 transitions. [2023-11-06 21:59:42,822 INFO L78 Accepts]: Start accepts. Automaton has 16381 states and 25513 transitions. Word has length 362 [2023-11-06 21:59:42,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:42,823 INFO L495 AbstractCegarLoop]: Abstraction has 16381 states and 25513 transitions. [2023-11-06 21:59:42,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-06 21:59:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 16381 states and 25513 transitions. [2023-11-06 21:59:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-06 21:59:42,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:42,837 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:42,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:43,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:43,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1655727579, now seen corresponding path program 1 times [2023-11-06 21:59:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:43,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612388630] [2023-11-06 21:59:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:43,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:59:43,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368797752] [2023-11-06 21:59:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:43,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:43,118 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:43,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841dc0f7-2457-4cd1-aa1d-de5d588f1c89/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process