./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-87.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_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/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_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-87.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/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_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/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 d1558071458a9b20d19a0574bae4bc888f78db92e0ff6316a4aff911aa1d4e26 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:56:48,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:56:48,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:56:48,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:56:48,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:56:48,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:56:48,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:56:48,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:56:48,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:56:48,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:56:48,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:56:48,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:56:48,604 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:56:48,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:56:48,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:56:48,607 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:56:48,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:56:48,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:56:48,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:56:48,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:56:48,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:56:48,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:56:48,611 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:56:48,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:56:48,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:56:48,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:56:48,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:56:48,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:56:48,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:48,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:56:48,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:56:48,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:56:48,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:56:48,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:56:48,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:56:48,619 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:56:48,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:56:48,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:56:48,620 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:56:48,621 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_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1558071458a9b20d19a0574bae4bc888f78db92e0ff6316a4aff911aa1d4e26 [2023-11-06 22:56:48,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:56:48,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:56:48,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:56:48,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:56:48,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:56:48,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-87.i [2023-11-06 22:56:52,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:56:52,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:56:52,304 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-87.i [2023-11-06 22:56:52,323 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/data/31b53a4f7/148002ca6bd243bdb27d7bb507239ca9/FLAGec72adbcb [2023-11-06 22:56:52,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/data/31b53a4f7/148002ca6bd243bdb27d7bb507239ca9 [2023-11-06 22:56:52,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:56:52,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:56:52,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:52,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:56:52,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:56:52,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b877d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52, skipping insertion in model container [2023-11-06 22:56:52,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,398 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:56:52,559 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_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-87.i[916,929] [2023-11-06 22:56:52,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:52,634 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:56:52,654 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_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-87.i[916,929] [2023-11-06 22:56:52,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:52,744 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:56:52,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52 WrapperNode [2023-11-06 22:56:52,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:52,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:52,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:56:52,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:56:52,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,832 INFO L138 Inliner]: procedures = 26, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 390 [2023-11-06 22:56:52,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:52,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:56:52,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:56:52,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:56:52,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:56:52,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:56:52,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:56:52,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:56:52,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (1/1) ... [2023-11-06 22:56:52,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:52,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:52,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:56:52,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:56:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:56:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:56:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:56:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:56:53,183 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:56:53,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:56:53,748 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:56:53,756 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:56:53,756 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:56:53,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:53 BoogieIcfgContainer [2023-11-06 22:56:53,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:56:53,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:56:53,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:56:53,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:56:53,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:52" (1/3) ... [2023-11-06 22:56:53,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3688f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:53, skipping insertion in model container [2023-11-06 22:56:53,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:52" (2/3) ... [2023-11-06 22:56:53,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3688f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:53, skipping insertion in model container [2023-11-06 22:56:53,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:53" (3/3) ... [2023-11-06 22:56:53,770 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-87.i [2023-11-06 22:56:53,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:56:53,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:56:53,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:56:53,845 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;@1eeba0fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:56:53,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:56:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 71 states have internal predecessors, (96), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:56:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:56:53,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:53,867 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:53,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:53,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:53,872 INFO L85 PathProgramCache]: Analyzing trace with hash -160032552, now seen corresponding path program 1 times [2023-11-06 22:56:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:53,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140234614] [2023-11-06 22:56:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:54,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140234614] [2023-11-06 22:56:54,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:56:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382832347] [2023-11-06 22:56:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:54,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:54,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:54,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:54,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:56:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:54,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:56:54,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-06 22:56:54,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:54,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382832347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:54,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:54,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:56:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732235215] [2023-11-06 22:56:54,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:56:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:56:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:56:54,681 INFO L87 Difference]: Start difference. First operand has 87 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 71 states have internal predecessors, (96), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:56:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:54,715 INFO L93 Difference]: Finished difference Result 167 states and 256 transitions. [2023-11-06 22:56:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:56:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2023-11-06 22:56:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:54,726 INFO L225 Difference]: With dead ends: 167 [2023-11-06 22:56:54,726 INFO L226 Difference]: Without dead ends: 83 [2023-11-06 22:56:54,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 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 22:56:54,734 INFO L413 NwaCegarLoop]: 115 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, 115 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 22:56:54,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-06 22:56:54,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-06 22:56:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 67 states have internal predecessors, (87), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:56:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 115 transitions. [2023-11-06 22:56:54,787 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 115 transitions. Word has length 111 [2023-11-06 22:56:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:54,788 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 115 transitions. [2023-11-06 22:56:54,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:56:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 115 transitions. [2023-11-06 22:56:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:56:54,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:54,792 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:54,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:56:54,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:54,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:54,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash -173670212, now seen corresponding path program 1 times [2023-11-06 22:56:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:54,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498846104] [2023-11-06 22:56:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:54,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:55,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:56:55,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611054162] [2023-11-06 22:56:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:55,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:55,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:55,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:56:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:55,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:56:55,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:56:55,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:55,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:55,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498846104] [2023-11-06 22:56:55,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:56:55,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611054162] [2023-11-06 22:56:55,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611054162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:55,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:55,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:56:55,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818609984] [2023-11-06 22:56:55,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:55,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:56:55,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:56:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:56:55,418 INFO L87 Difference]: Start difference. First operand 83 states and 115 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:55,529 INFO L93 Difference]: Finished difference Result 175 states and 244 transitions. [2023-11-06 22:56:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:55,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-11-06 22:56:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:55,534 INFO L225 Difference]: With dead ends: 175 [2023-11-06 22:56:55,534 INFO L226 Difference]: Without dead ends: 95 [2023-11-06 22:56:55,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 22:56:55,537 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 21 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 332 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 22:56:55,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 332 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-06 22:56:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2023-11-06 22:56:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 69 states have (on average 1.289855072463768) internal successors, (89), 69 states have internal predecessors, (89), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:56:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2023-11-06 22:56:55,570 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 111 [2023-11-06 22:56:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:55,575 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2023-11-06 22:56:55,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2023-11-06 22:56:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:56:55,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:55,582 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:55,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:56:55,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:55,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:55,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash 506388158, now seen corresponding path program 1 times [2023-11-06 22:56:55,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713942786] [2023-11-06 22:56:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:55,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:56:55,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736540713] [2023-11-06 22:56:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:55,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:55,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:55,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:55,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:56:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:56,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:56:56,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:56:56,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:56,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713942786] [2023-11-06 22:56:56,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:56:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736540713] [2023-11-06 22:56:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736540713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:56,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:56,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:56:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729382443] [2023-11-06 22:56:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:56,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:56:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:56,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:56:56,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:56:56,225 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:56,295 INFO L93 Difference]: Finished difference Result 175 states and 242 transitions. [2023-11-06 22:56:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:56,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-11-06 22:56:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:56,304 INFO L225 Difference]: With dead ends: 175 [2023-11-06 22:56:56,304 INFO L226 Difference]: Without dead ends: 93 [2023-11-06 22:56:56,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 22:56:56,311 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 12 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:56,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 330 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-06 22:56:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2023-11-06 22:56:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 71 states have internal predecessors, (91), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:56:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2023-11-06 22:56:56,341 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 111 [2023-11-06 22:56:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:56,344 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2023-11-06 22:56:56,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2023-11-06 22:56:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:56:56,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:56,347 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:56,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:56,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:56,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:56,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2013571776, now seen corresponding path program 1 times [2023-11-06 22:56:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:56,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205713867] [2023-11-06 22:56:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:56,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:56,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:56:56,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171521015] [2023-11-06 22:56:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:56,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:56,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:56,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:56:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:56,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:56:56,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:56:56,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:56,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:56,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205713867] [2023-11-06 22:56:56,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:56:56,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171521015] [2023-11-06 22:56:56,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171521015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:56,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:56:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23424149] [2023-11-06 22:56:56,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:56,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:56:56,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:56,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:56:56,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:56:56,868 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:56,897 INFO L93 Difference]: Finished difference Result 175 states and 240 transitions. [2023-11-06 22:56:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-11-06 22:56:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:56,899 INFO L225 Difference]: With dead ends: 175 [2023-11-06 22:56:56,899 INFO L226 Difference]: Without dead ends: 91 [2023-11-06 22:56:56,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 22:56:56,901 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 3 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:56,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 329 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-06 22:56:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2023-11-06 22:56:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:56:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2023-11-06 22:56:56,912 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 111 [2023-11-06 22:56:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:56,914 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2023-11-06 22:56:56,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2023-11-06 22:56:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:56:56,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:56,917 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:56,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:57,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:57,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:57,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2011724734, now seen corresponding path program 1 times [2023-11-06 22:56:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506199681] [2023-11-06 22:56:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:57,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:56:57,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206913822] [2023-11-06 22:56:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:57,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:57,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:57,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:57,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:56:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:57,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:56:57,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:56:57,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506199681] [2023-11-06 22:56:57,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:56:57,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206913822] [2023-11-06 22:56:57,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206913822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:57,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:57,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:56:57,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085857789] [2023-11-06 22:56:57,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:56:57,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:56:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:56:57,454 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:57,494 INFO L93 Difference]: Finished difference Result 204 states and 279 transitions. [2023-11-06 22:56:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-11-06 22:56:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:57,497 INFO L225 Difference]: With dead ends: 204 [2023-11-06 22:56:57,497 INFO L226 Difference]: Without dead ends: 118 [2023-11-06 22:56:57,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 22:56:57,500 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 55 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 354 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 22:56:57,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 354 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-06 22:56:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2023-11-06 22:56:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 75 states have internal predecessors, (95), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:56:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions. [2023-11-06 22:56:57,527 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 111 [2023-11-06 22:56:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:57,529 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 123 transitions. [2023-11-06 22:56:57,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:56:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions. [2023-11-06 22:56:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 22:56:57,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:57,552 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:57,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:57,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:57,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:57,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1933177509, now seen corresponding path program 1 times [2023-11-06 22:56:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424576998] [2023-11-06 22:56:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:57,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:56:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664874175] [2023-11-06 22:56:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:57,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:57,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:57,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:57,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:56:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:58,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:56:58,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:00,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:57:00,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-06 22:57:00,554 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:57:00,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-06 22:57:00,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:00,687 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-06 22:57:00,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-11-06 22:57:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:00,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:00,805 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_295 (Array Int Int))) (< (mod (select (select (store |c_#memory_int| c_~var_1_10_Pointer~0.base v_ArrVal_295) c_~var_1_13_Pointer~0.base) c_~var_1_13_Pointer~0.offset) 256) 1)) is different from false [2023-11-06 22:57:00,830 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_294 (Array Int Int)) (v_ArrVal_295 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| c_~var_1_5_Pointer~0.base v_ArrVal_294) c_~var_1_10_Pointer~0.base v_ArrVal_295) c_~var_1_13_Pointer~0.base) c_~var_1_13_Pointer~0.offset) 256) 1)) is different from false [2023-11-06 22:57:00,925 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_290 (Array Int Int)) (v_ArrVal_294 (Array Int Int)) (v_ArrVal_293 (Array Int Int)) (v_ArrVal_295 (Array Int Int)) (~var_1_13_Pointer~0.offset Int)) (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| c_~var_1_12_Pointer~0.base v_ArrVal_293))) (store .cse1 c_~var_1_13_Pointer~0.base (store (select .cse1 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset (select (select .cse1 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset)))) c_~var_1_15_Pointer~0.base v_ArrVal_290))) (or (< (mod (select (select (store (store .cse0 c_~var_1_5_Pointer~0.base v_ArrVal_294) c_~var_1_10_Pointer~0.base v_ArrVal_295) c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset) 256) 1) (< 0 (mod (select (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset) 256))))) is different from false [2023-11-06 22:57:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424576998] [2023-11-06 22:57:00,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664874175] [2023-11-06 22:57:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664874175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:00,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-06 22:57:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909481639] [2023-11-06 22:57:00,992 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:00,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:57:00,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:57:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=85, Unknown=3, NotChecked=60, Total=182 [2023-11-06 22:57:00,996 INFO L87 Difference]: Start difference. First operand 91 states and 123 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:57:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:01,654 INFO L93 Difference]: Finished difference Result 254 states and 345 transitions. [2023-11-06 22:57:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:57:01,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2023-11-06 22:57:01,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:01,657 INFO L225 Difference]: With dead ends: 254 [2023-11-06 22:57:01,657 INFO L226 Difference]: Without dead ends: 166 [2023-11-06 22:57:01,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=153, Unknown=3, NotChecked=84, Total=306 [2023-11-06 22:57:01,659 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 303 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:01,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 217 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:57:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-06 22:57:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 103. [2023-11-06 22:57:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 87 states have internal predecessors, (113), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:57:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 141 transitions. [2023-11-06 22:57:01,673 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 141 transitions. Word has length 113 [2023-11-06 22:57:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:01,674 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 141 transitions. [2023-11-06 22:57:01,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:57:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 141 transitions. [2023-11-06 22:57:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 22:57:01,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:01,676 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:01,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:01,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:01,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -633094042, now seen corresponding path program 1 times [2023-11-06 22:57:01,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:01,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833960068] [2023-11-06 22:57:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:01,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:01,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:01,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695410814] [2023-11-06 22:57:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:01,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:01,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:01,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:01,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:57:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:02,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:57:02,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:57:02,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-06 22:57:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:57:02,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:02,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833960068] [2023-11-06 22:57:02,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695410814] [2023-11-06 22:57:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695410814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:02,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:02,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:57:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26228857] [2023-11-06 22:57:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:02,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:57:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:57:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:57:02,856 INFO L87 Difference]: Start difference. First operand 103 states and 141 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:57:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:03,523 INFO L93 Difference]: Finished difference Result 316 states and 430 transitions. [2023-11-06 22:57:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:57:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-11-06 22:57:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:03,526 INFO L225 Difference]: With dead ends: 316 [2023-11-06 22:57:03,526 INFO L226 Difference]: Without dead ends: 216 [2023-11-06 22:57:03,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:57:03,528 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 397 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:03,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 480 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:57:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-06 22:57:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 123. [2023-11-06 22:57:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 107 states have (on average 1.308411214953271) internal successors, (140), 107 states have internal predecessors, (140), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:57:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 168 transitions. [2023-11-06 22:57:03,549 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 168 transitions. Word has length 113 [2023-11-06 22:57:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:03,549 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 168 transitions. [2023-11-06 22:57:03,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:57:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 168 transitions. [2023-11-06 22:57:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-06 22:57:03,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:03,553 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:03,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:03,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:03,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:03,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash -776494331, now seen corresponding path program 1 times [2023-11-06 22:57:03,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:03,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163002405] [2023-11-06 22:57:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:03,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:03,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:03,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135243970] [2023-11-06 22:57:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:03,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:03,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:03,798 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:03,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:57:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:57:04,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:05,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:57:05,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,790 INFO L322 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2023-11-06 22:57:05,790 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 104 [2023-11-06 22:57:05,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:57:05,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:57:05,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:05,920 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:05,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 113 [2023-11-06 22:57:05,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2023-11-06 22:57:06,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:57:06,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 22:57:06,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:57:06,065 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:57:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 36 proven. 52 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 22:57:06,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:06,113 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_399 (Array Int Int)) (v_ArrVal_398 (Array Int Int)) (~var_1_13_Pointer~0.offset Int)) (< 0 (mod (select (select (store (let ((.cse0 (store |c_#memory_int| c_~var_1_12_Pointer~0.base v_ArrVal_399))) (store .cse0 c_~var_1_13_Pointer~0.base (store (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset (select (select .cse0 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset)))) c_~var_1_15_Pointer~0.base v_ArrVal_398) c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset) 256))) is different from false [2023-11-06 22:57:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:06,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163002405] [2023-11-06 22:57:06,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135243970] [2023-11-06 22:57:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135243970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:06,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:06,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-06 22:57:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716448803] [2023-11-06 22:57:06,127 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:06,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:57:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:57:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=53, Unknown=1, NotChecked=14, Total=90 [2023-11-06 22:57:06,129 INFO L87 Difference]: Start difference. First operand 123 states and 168 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:57:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:06,659 INFO L93 Difference]: Finished difference Result 232 states and 313 transitions. [2023-11-06 22:57:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:57:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2023-11-06 22:57:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:06,661 INFO L225 Difference]: With dead ends: 232 [2023-11-06 22:57:06,661 INFO L226 Difference]: Without dead ends: 112 [2023-11-06 22:57:06,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=131, Unknown=1, NotChecked=24, Total=210 [2023-11-06 22:57:06,664 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 79 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:06,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 365 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:57:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-06 22:57:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-11-06 22:57:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 93 states have internal predecessors, (117), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:57:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 145 transitions. [2023-11-06 22:57:06,679 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 145 transitions. Word has length 114 [2023-11-06 22:57:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:06,680 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 145 transitions. [2023-11-06 22:57:06,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:57:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 145 transitions. [2023-11-06 22:57:06,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 22:57:06,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:06,682 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:06,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:06,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:06,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:06,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 200671924, now seen corresponding path program 1 times [2023-11-06 22:57:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:06,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123489395] [2023-11-06 22:57:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:06,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391969139] [2023-11-06 22:57:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:06,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:06,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:06,922 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:06,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b62d0d-f482-4434-96c6-5414c3c2eb0b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:57:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:07,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:57:07,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:07,245 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:57:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2023-11-06 22:57:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,418 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2023-11-06 22:57:08,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2023-11-06 22:57:08,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:08,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-06 22:57:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-06 22:57:08,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:08,737 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_455 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_10_Pointer~0.base v_ArrVal_455))) (= (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 4294967296) (mod (+ (select (select .cse0 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) (* 4294967295 (select (select .cse0 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset))) 4294967296)))) is different from false [2023-11-06 22:57:08,756 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_454 (Array Int Int)) (v_ArrVal_455 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_5_Pointer~0.base v_ArrVal_454) c_~var_1_10_Pointer~0.base v_ArrVal_455))) (= (mod (+ (* 4294967295 (select (select .cse0 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) (select (select .cse0 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 4294967296) (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 4294967296)))) is different from false [2023-11-06 22:57:08,796 WARN L839 $PredicateComparison]: unable to prove that (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_454 (Array Int Int)) (v_ArrVal_455 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store (select |c_#memory_int| c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset |c_ULTIMATE.start_step_#t~ite14#1|)) c_~var_1_5_Pointer~0.base v_ArrVal_454) c_~var_1_10_Pointer~0.base v_ArrVal_455))) (= (mod (+ (* (select (select .cse0 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) 4294967295) (select (select .cse0 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 4294967296) (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 4294967296)))) is different from false [2023-11-06 22:57:08,894 INFO L322 Elim1Store]: treesize reduction 34, result has 63.0 percent of original size [2023-11-06 22:57:08,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 101 treesize of output 99 [2023-11-06 22:57:08,995 INFO L322 Elim1Store]: treesize reduction 11, result has 67.6 percent of original size [2023-11-06 22:57:08,995 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 7343 treesize of output 6581 [2023-11-06 22:57:09,221 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:09,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1622 treesize of output 1454 [2023-11-06 22:57:09,319 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:09,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1430 treesize of output 1358