./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-59.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/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_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/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_c3e4c899-bc80-49d1-a06c-70b997f191ff/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 fc0a0af56e5e9321edcb3f4b8b60429c2310fce90b678a839adfd55ae003bf1d
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 22:02:21,573 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 22:02:21,646 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-06 22:02:21,650 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 22:02:21,651 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 22:02:21,674 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 22:02:21,675 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 22:02:21,676 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 22:02:21,677 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 22:02:21,677 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 22:02:21,678 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 22:02:21,679 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 22:02:21,679 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 22:02:21,680 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 22:02:21,680 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 22:02:21,681 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-06 22:02:21,681 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 22:02:21,682 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-06 22:02:21,682 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 22:02:21,683 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 22:02:21,683 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 22:02:21,684 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 22:02:21,685 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-06 22:02:21,685 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 22:02:21,686 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 22:02:21,686 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 22:02:21,687 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 22:02:21,687 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 22:02:21,688 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:02:21,688 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 22:02:21,689 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 22:02:21,689 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 22:02:21,690 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 22:02:21,690 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 22:02:21,691 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 22:02:21,691 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 22:02:21,692 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 22:02:21,692 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 22:02:21,692 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 22:02:21,693 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_c3e4c899-bc80-49d1-a06c-70b997f191ff/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_c3e4c899-bc80-49d1-a06c-70b997f191ff/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 -> fc0a0af56e5e9321edcb3f4b8b60429c2310fce90b678a839adfd55ae003bf1d
[2023-11-06 22:02:21,970 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 22:02:22,000 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 22:02:22,002 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 22:02:22,004 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 22:02:22,006 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 22:02:22,008 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-59.i
[2023-11-06 22:02:24,997 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 22:02:25,200 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 22:02:25,200 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-59.i
[2023-11-06 22:02:25,210 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/data/a1a0eb3a3/8a4a6acaa4d24b0890a6e28b033ae2ee/FLAGf7734efd0
[2023-11-06 22:02:25,224 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/data/a1a0eb3a3/8a4a6acaa4d24b0890a6e28b033ae2ee
[2023-11-06 22:02:25,227 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 22:02:25,228 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 22:02:25,229 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 22:02:25,230 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 22:02:25,235 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 22:02:25,236 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,237 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552cb99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25, skipping insertion in model container
[2023-11-06 22:02:25,237 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,275 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 22:02:25,471 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_c3e4c899-bc80-49d1-a06c-70b997f191ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-59.i[913,926]
[2023-11-06 22:02:25,545 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:02:25,567 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 22:02:25,585 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_c3e4c899-bc80-49d1-a06c-70b997f191ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-59.i[913,926]
[2023-11-06 22:02:25,650 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:02:25,678 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 22:02:25,679 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25 WrapperNode
[2023-11-06 22:02:25,679 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 22:02:25,682 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 22:02:25,682 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 22:02:25,683 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 22:02:25,690 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,716 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,764 INFO  L138                Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129
[2023-11-06 22:02:25,766 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 22:02:25,767 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 22:02:25,768 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 22:02:25,768 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 22:02:25,778 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,779 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,792 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,793 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,807 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,818 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,825 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,833 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,839 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 22:02:25,843 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 22:02:25,843 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 22:02:25,843 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 22:02:25,844 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (1/1) ...
[2023-11-06 22:02:25,851 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:02:25,863 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:02:25,880 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 22:02:25,896 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 22:02:25,915 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 22:02:25,915 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-06 22:02:25,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-06 22:02:25,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 22:02:25,915 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 22:02:25,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 22:02:25,996 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 22:02:25,999 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 22:02:26,461 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 22:02:26,468 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 22:02:26,469 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 22:02:26,471 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:02:26 BoogieIcfgContainer
[2023-11-06 22:02:26,471 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 22:02:26,474 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 22:02:26,474 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 22:02:26,477 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 22:02:26,478 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:02:25" (1/3) ...
[2023-11-06 22:02:26,478 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f331f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:02:26, skipping insertion in model container
[2023-11-06 22:02:26,479 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:25" (2/3) ...
[2023-11-06 22:02:26,479 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f331f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:02:26, skipping insertion in model container
[2023-11-06 22:02:26,479 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:02:26" (3/3) ...
[2023-11-06 22:02:26,481 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_normal_file-59.i
[2023-11-06 22:02:26,498 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 22:02:26,498 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 22:02:26,544 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 22:02:26,550 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;@1d97a88b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 22:02:26,550 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 22:02:26,554 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 54 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 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 22:02:26,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2023-11-06 22:02:26,564 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:02:26,565 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]
[2023-11-06 22:02:26,566 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:02:26,570 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:02:26,570 INFO  L85        PathProgramCache]: Analyzing trace with hash 1164860862, now seen corresponding path program 1 times
[2023-11-06 22:02:26,578 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:02:26,578 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116792965]
[2023-11-06 22:02:26,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:26,579 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:02:26,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:02:26,782 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:02:26,786 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116792965]
[2023-11-06 22:02:26,786 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-11-06 22:02:26,787 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672204364]
[2023-11-06 22:02:26,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:26,787 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:02:26,788 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:02:26,791 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:02:26,844 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-06 22:02:27,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:02:27,013 INFO  L262         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-06 22:02:27,022 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:02:27,061 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 22:02:27,061 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:02:27,062 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672204364] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:02:27,062 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:02:27,063 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-06 22:02:27,065 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258832199]
[2023-11-06 22:02:27,066 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:02:27,070 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-06 22:02:27,071 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:02:27,107 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-06 22:02:27,108 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-06 22:02:27,111 INFO  L87              Difference]: Start difference. First operand  has 54 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 22:02:27,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:02:27,152 INFO  L93              Difference]: Finished difference Result 101 states and 168 transitions.
[2023-11-06 22:02:27,153 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-06 22:02:27,154 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 95
[2023-11-06 22:02:27,154 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:02:27,160 INFO  L225             Difference]: With dead ends: 101
[2023-11-06 22:02:27,161 INFO  L226             Difference]: Without dead ends: 50
[2023-11-06 22:02:27,164 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 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 22:02:27,168 INFO  L413           NwaCegarLoop]: 73 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, 73 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 22:02:27,169 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:02:27,182 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2023-11-06 22:02:27,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2023-11-06 22:02:27,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 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 22:02:27,213 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 73 transitions.
[2023-11-06 22:02:27,214 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 73 transitions. Word has length 95
[2023-11-06 22:02:27,215 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:02:27,215 INFO  L495      AbstractCegarLoop]: Abstraction has 50 states and 73 transitions.
[2023-11-06 22:02:27,216 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 22:02:27,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 73 transitions.
[2023-11-06 22:02:27,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2023-11-06 22:02:27,222 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:02:27,222 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]
[2023-11-06 22:02:27,233 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-06 22:02:27,429 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-11-06 22:02:27,429 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:02:27,430 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:02:27,430 INFO  L85        PathProgramCache]: Analyzing trace with hash 1236847222, now seen corresponding path program 1 times
[2023-11-06 22:02:27,431 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:02:27,431 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323767509]
[2023-11-06 22:02:27,431 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:27,431 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:02:27,534 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:02:27,534 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051853299]
[2023-11-06 22:02:27,534 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:27,534 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:02:27,535 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:02:27,550 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:02:27,573 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-06 22:02:27,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:02:27,740 INFO  L262         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-06 22:02:27,754 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:02:27,983 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 22:02:27,983 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:02:27,983 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:02:27,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323767509]
[2023-11-06 22:02:27,984 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:02:27,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051853299]
[2023-11-06 22:02:27,984 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051853299] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:02:27,984 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:02:27,985 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-06 22:02:27,985 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801982751]
[2023-11-06 22:02:27,985 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:02:27,986 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:02:27,986 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:02:27,987 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:02:27,987 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:02:27,988 INFO  L87              Difference]: Start difference. First operand 50 states and 73 transitions. Second operand  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 22:02:28,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:02:28,103 INFO  L93              Difference]: Finished difference Result 145 states and 214 transitions.
[2023-11-06 22:02:28,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:02:28,104 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 95
[2023-11-06 22:02:28,106 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:02:28,107 INFO  L225             Difference]: With dead ends: 145
[2023-11-06 22:02:28,107 INFO  L226             Difference]: Without dead ends: 98
[2023-11-06 22:02:28,109 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 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 22:02:28,110 INFO  L413           NwaCegarLoop]: 70 mSDtfsCounter, 48 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:02:28,110 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 203 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 22:02:28,112 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2023-11-06 22:02:28,130 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79.
[2023-11-06 22:02:28,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2023-11-06 22:02:28,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 115 transitions.
[2023-11-06 22:02:28,133 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 115 transitions. Word has length 95
[2023-11-06 22:02:28,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:02:28,134 INFO  L495      AbstractCegarLoop]: Abstraction has 79 states and 115 transitions.
[2023-11-06 22:02:28,134 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 22:02:28,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 115 transitions.
[2023-11-06 22:02:28,137 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2023-11-06 22:02:28,138 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:02:28,138 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]
[2023-11-06 22:02:28,144 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-06 22:02:28,345 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:02:28,346 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:02:28,346 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:02:28,346 INFO  L85        PathProgramCache]: Analyzing trace with hash 1287173988, now seen corresponding path program 1 times
[2023-11-06 22:02:28,346 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:02:28,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288370987]
[2023-11-06 22:02:28,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:28,347 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:02:28,393 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:02:28,393 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570214723]
[2023-11-06 22:02:28,394 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:28,394 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:02:28,394 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:02:28,395 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:02:28,430 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-06 22:02:28,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:02:28,763 INFO  L262         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-06 22:02:28,771 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:02:29,015 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 22:02:29,023 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-06 22:02:29,024 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:02:29,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288370987]
[2023-11-06 22:02:29,024 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:02:29,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570214723]
[2023-11-06 22:02:29,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570214723] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:02:29,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:02:29,026 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:02:29,027 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014060961]
[2023-11-06 22:02:29,027 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:02:29,028 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 22:02:29,029 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:02:29,030 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 22:02:29,031 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-11-06 22:02:29,031 INFO  L87              Difference]: Start difference. First operand 79 states and 115 transitions. Second operand  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 22:02:29,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:02:29,304 INFO  L93              Difference]: Finished difference Result 183 states and 267 transitions.
[2023-11-06 22:02:29,305 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:02:29,305 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 96
[2023-11-06 22:02:29,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:02:29,314 INFO  L225             Difference]: With dead ends: 183
[2023-11-06 22:02:29,314 INFO  L226             Difference]: Without dead ends: 136
[2023-11-06 22:02:29,319 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2023-11-06 22:02:29,323 INFO  L413           NwaCegarLoop]: 71 mSDtfsCounter, 111 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-06 22:02:29,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 230 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-06 22:02:29,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2023-11-06 22:02:29,399 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124.
[2023-11-06 22:02:29,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 124 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42)
[2023-11-06 22:02:29,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions.
[2023-11-06 22:02:29,403 INFO  L78                 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 96
[2023-11-06 22:02:29,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:02:29,404 INFO  L495      AbstractCegarLoop]: Abstraction has 124 states and 182 transitions.
[2023-11-06 22:02:29,404 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 22:02:29,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions.
[2023-11-06 22:02:29,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-06 22:02:29,406 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:02:29,407 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]
[2023-11-06 22:02:29,413 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-06 22:02:29,612 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:02:29,613 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:02:29,613 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:02:29,614 INFO  L85        PathProgramCache]: Analyzing trace with hash 866463787, now seen corresponding path program 1 times
[2023-11-06 22:02:29,614 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:02:29,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260520577]
[2023-11-06 22:02:29,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:29,614 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:02:29,671 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:02:29,675 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931429817]
[2023-11-06 22:02:29,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:02:29,676 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:02:29,677 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:02:29,678 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:02:29,701 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-06 22:02:30,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:02:30,174 INFO  L262         TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-11-06 22:02:30,180 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:02:31,951 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 169 proven. 105 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2023-11-06 22:02:31,951 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:03:11,705 WARN  L293               SmtUtils]: Spent 9.80s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-11-06 22:03:31,935 WARN  L839   $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~var_1_4~0 256))) (let ((.cse4 (mod c_~var_1_19~0 4294967296)) (.cse2 (div (mod c_~var_1_6~0 65536) .cse7))) (let ((.cse0 (mod (+ .cse7 c_~var_1_7~0) 65536)) (.cse3 (mod (* c_~var_1_19~0 .cse2) 4294967296)) (.cse5 (mod |c_ULTIMATE.start_step_~stepLocal_2~0#1| 65536)) (.cse6 (+ (mod c_~var_1_7~0 65536) .cse7 1)) (.cse1 (+ .cse4 1))) (and (or (< .cse0 .cse1) (not (= (mod (* .cse2 .cse0) 4294967296) .cse0))) (or (not (= .cse3 .cse0)) (< .cse4 .cse0)) (or (< .cse5 .cse3) (< .cse3 .cse6) (< .cse4 .cse3)) (forall ((v_z_6 Int)) (or (not (= (mod (* v_z_6 .cse2) 4294967296) v_z_6)) (< .cse5 v_z_6) (< v_z_6 .cse6) (< v_z_6 .cse1))))))) is different from false
[2023-11-06 22:04:38,897 WARN  L293               SmtUtils]: Spent 19.50s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-11-06 22:05:47,917 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:05:47,918 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260520577]
[2023-11-06 22:05:47,918 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:05:47,918 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931429817]
[2023-11-06 22:05:47,918 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931429817] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-06 22:05:47,918 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2023-11-06 22:05:47,918 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2023-11-06 22:05:47,919 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439969829]
[2023-11-06 22:05:47,919 INFO  L85    oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2023-11-06 22:05:47,919 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-11-06 22:05:47,920 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:05:47,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-11-06 22:05:47,921 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=673, Unknown=26, NotChecked=58, Total=992
[2023-11-06 22:05:47,922 INFO  L87              Difference]: Start difference. First operand 124 states and 182 transitions. Second operand  has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 6 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-06 22:06:02,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:06:02,501 INFO  L93              Difference]: Finished difference Result 264 states and 334 transitions.
[2023-11-06 22:06:02,502 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2023-11-06 22:06:02,502 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 6 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 97
[2023-11-06 22:06:02,503 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:06:02,505 INFO  L225             Difference]: With dead ends: 264
[2023-11-06 22:06:02,505 INFO  L226             Difference]: Without dead ends: 217
[2023-11-06 22:06:02,507 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 137.3s TimeCoverageRelationStatistics Valid=522, Invalid=1523, Unknown=29, NotChecked=88, Total=2162
[2023-11-06 22:06:02,508 INFO  L413           NwaCegarLoop]: 57 mSDtfsCounter, 134 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2023-11-06 22:06:02,509 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 348 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2023-11-06 22:06:02,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 217 states.
[2023-11-06 22:06:02,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 186.
[2023-11-06 22:06:02,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 186 states, 125 states have (on average 1.16) internal successors, (145), 125 states have internal predecessors, (145), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42)
[2023-11-06 22:06:02,580 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 229 transitions.
[2023-11-06 22:06:02,580 INFO  L78                 Accepts]: Start accepts. Automaton has 186 states and 229 transitions. Word has length 97
[2023-11-06 22:06:02,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:06:02,581 INFO  L495      AbstractCegarLoop]: Abstraction has 186 states and 229 transitions.
[2023-11-06 22:06:02,582 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 6 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-06 22:06:02,582 INFO  L276                IsEmpty]: Start isEmpty. Operand 186 states and 229 transitions.
[2023-11-06 22:06:02,588 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-06 22:06:02,592 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:06:02,592 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]
[2023-11-06 22:06:02,602 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-06 22:06:02,793 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:06:02,793 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:06:02,793 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:06:02,794 INFO  L85        PathProgramCache]: Analyzing trace with hash -1653496147, now seen corresponding path program 1 times
[2023-11-06 22:06:02,794 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:06:02,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704839314]
[2023-11-06 22:06:02,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:06:02,794 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:06:02,842 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:06:02,844 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058874363]
[2023-11-06 22:06:02,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:06:02,845 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:06:02,845 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:06:02,849 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:06:02,877 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-06 22:06:02,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:06:02,985 INFO  L262         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-11-06 22:06:02,989 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:06:03,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 85 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-11-06 22:06:03,237 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-06 22:06:03,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked.
[2023-11-06 22:06:03,467 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:06:03,467 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704839314]
[2023-11-06 22:06:03,468 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-06 22:06:03,468 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058874363]
[2023-11-06 22:06:03,468 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058874363] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-06 22:06:03,468 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-06 22:06:03,468 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15
[2023-11-06 22:06:03,469 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977671941]
[2023-11-06 22:06:03,469 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-06 22:06:03,470 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-06 22:06:03,470 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:06:03,471 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-06 22:06:03,471 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2023-11-06 22:06:03,472 INFO  L87              Difference]: Start difference. First operand 186 states and 229 transitions. Second operand  has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28)
[2023-11-06 22:06:04,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:06:04,891 INFO  L93              Difference]: Finished difference Result 766 states and 938 transitions.
[2023-11-06 22:06:04,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2023-11-06 22:06:04,892 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 97
[2023-11-06 22:06:04,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:06:04,898 INFO  L225             Difference]: With dead ends: 766
[2023-11-06 22:06:04,898 INFO  L226             Difference]: Without dead ends: 632
[2023-11-06 22:06:04,899 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332
[2023-11-06 22:06:04,900 INFO  L413           NwaCegarLoop]: 95 mSDtfsCounter, 516 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-11-06 22:06:04,900 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 629 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-11-06 22:06:04,902 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 632 states.
[2023-11-06 22:06:04,959 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 396.
[2023-11-06 22:06:04,960 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 396 states, 276 states have (on average 1.1521739130434783) internal successors, (318), 279 states have internal predecessors, (318), 79 states have call successors, (79), 40 states have call predecessors, (79), 40 states have return successors, (79), 76 states have call predecessors, (79), 79 states have call successors, (79)
[2023-11-06 22:06:04,964 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 476 transitions.
[2023-11-06 22:06:04,964 INFO  L78                 Accepts]: Start accepts. Automaton has 396 states and 476 transitions. Word has length 97
[2023-11-06 22:06:04,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:06:04,965 INFO  L495      AbstractCegarLoop]: Abstraction has 396 states and 476 transitions.
[2023-11-06 22:06:04,965 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28)
[2023-11-06 22:06:04,965 INFO  L276                IsEmpty]: Start isEmpty. Operand 396 states and 476 transitions.
[2023-11-06 22:06:04,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2023-11-06 22:06:04,967 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:06:04,967 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]
[2023-11-06 22:06:04,982 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-06 22:06:05,173 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:06:05,173 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:06:05,174 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:06:05,174 INFO  L85        PathProgramCache]: Analyzing trace with hash -1395330709, now seen corresponding path program 1 times
[2023-11-06 22:06:05,174 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:06:05,174 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180533983]
[2023-11-06 22:06:05,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:06:05,175 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:06:05,219 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-06 22:06:05,219 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387423970]
[2023-11-06 22:06:05,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:06:05,220 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-06 22:06:05,220 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:06:05,221 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-06 22:06:05,228 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3e4c899-bc80-49d1-a06c-70b997f191ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-06 22:06:05,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:06:05,561 INFO  L262         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 43 conjunts are in the unsatisfiable core
[2023-11-06 22:06:05,566 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-06 22:06:14,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 364 backedges. 133 proven. 81 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2023-11-06 22:06:14,934 INFO  L327         TraceCheckSpWp]: Computing backward predicates...