./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:08:25,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:08:26,066 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:08:26,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:08:26,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:08:26,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:08:26,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:08:26,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:08:26,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:08:26,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:08:26,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:08:26,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:08:26,133 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:08:26,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:08:26,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:08:26,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:08:26,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:08:26,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:08:26,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:08:26,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:08:26,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:08:26,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:08:26,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:08:26,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:08:26,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:08:26,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:08:26,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:08:26,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:08:26,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:26,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:08:26,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:08:26,145 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:08:26,145 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:08:26,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:08:26,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:08:26,146 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:08:26,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:08:26,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:08:26,147 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:08:26,147 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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2023-11-06 22:08:26,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:08:26,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:08:26,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:08:26,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:08:26,438 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:08:26,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2023-11-06 22:08:29,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:08:29,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:08:29,936 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2023-11-06 22:08:29,964 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/data/45ad47ea3/7ef67880bd584f369f7cca0fd7490d0a/FLAG4ec4f6885 [2023-11-06 22:08:29,986 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/data/45ad47ea3/7ef67880bd584f369f7cca0fd7490d0a [2023-11-06 22:08:29,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:08:29,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:08:29,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:29,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:08:30,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:08:30,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:29" (1/1) ... [2023-11-06 22:08:30,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f13ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30, skipping insertion in model container [2023-11-06 22:08:30,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:29" (1/1) ... [2023-11-06 22:08:30,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:30,463 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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2023-11-06 22:08:30,614 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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2023-11-06 22:08:30,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:30,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:08:30,700 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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2023-11-06 22:08:30,837 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_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2023-11-06 22:08:30,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:30,886 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:08:30,894 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:08:30,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30 WrapperNode [2023-11-06 22:08:30,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:30,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:30,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:08:30,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:08:30,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:30,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,031 INFO L138 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1494 [2023-11-06 22:08:31,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:31,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:08:31,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:08:31,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:08:31,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:08:31,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:08:31,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:08:31,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:08:31,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (1/1) ... [2023-11-06 22:08:31,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:31,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:08:31,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:08:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:08:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:08:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:08:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:08:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:08:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:08:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-06 22:08:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-06 22:08:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:08:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:08:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:08:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:08:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 22:08:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:08:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:08:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:08:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:08:31,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:08:31,590 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:08:31,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:08:33,494 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:08:33,504 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:08:33,505 INFO L302 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-06 22:08:33,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:33 BoogieIcfgContainer [2023-11-06 22:08:33,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:08:33,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:08:33,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:08:33,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:08:33,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:29" (1/3) ... [2023-11-06 22:08:33,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6a835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:33, skipping insertion in model container [2023-11-06 22:08:33,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:30" (2/3) ... [2023-11-06 22:08:33,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6a835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:33, skipping insertion in model container [2023-11-06 22:08:33,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:33" (3/3) ... [2023-11-06 22:08:33,517 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-2.i [2023-11-06 22:08:33,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:08:33,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:08:33,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:33,608 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;@145f6803, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:33,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:08:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 428 states, 402 states have (on average 1.6940298507462686) internal successors, (681), 419 states have internal predecessors, (681), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 22:08:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:08:33,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:33,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:33,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:33,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash 193027328, now seen corresponding path program 1 times [2023-11-06 22:08:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:33,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122224314] [2023-11-06 22:08:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:33,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:33,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:33,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122224314] [2023-11-06 22:08:33,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122224314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:33,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:33,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52294807] [2023-11-06 22:08:33,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:33,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:08:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:08:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:08:33,901 INFO L87 Difference]: Start difference. First operand has 428 states, 402 states have (on average 1.6940298507462686) internal successors, (681), 419 states have internal predecessors, (681), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:33,978 INFO L93 Difference]: Finished difference Result 854 states and 1457 transitions. [2023-11-06 22:08:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:08:33,985 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 22:08:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:34,002 INFO L225 Difference]: With dead ends: 854 [2023-11-06 22:08:34,002 INFO L226 Difference]: Without dead ends: 390 [2023-11-06 22:08:34,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 22:08:34,016 INFO L413 NwaCegarLoop]: 644 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, 644 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 22:08:34,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:08:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-06 22:08:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2023-11-06 22:08:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 365 states have (on average 1.515068493150685) internal successors, (553), 381 states have internal predecessors, (553), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 22:08:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 593 transitions. [2023-11-06 22:08:34,130 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 593 transitions. Word has length 9 [2023-11-06 22:08:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:34,130 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 593 transitions. [2023-11-06 22:08:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 593 transitions. [2023-11-06 22:08:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:08:34,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:34,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:08:34,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:34,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 420003896, now seen corresponding path program 1 times [2023-11-06 22:08:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:34,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700257488] [2023-11-06 22:08:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:34,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700257488] [2023-11-06 22:08:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700257488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:34,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:34,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443768146] [2023-11-06 22:08:34,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:34,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:34,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:34,670 INFO L87 Difference]: Start difference. First operand 390 states and 593 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:35,494 INFO L93 Difference]: Finished difference Result 869 states and 1336 transitions. [2023-11-06 22:08:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:08:35,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-06 22:08:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:35,504 INFO L225 Difference]: With dead ends: 869 [2023-11-06 22:08:35,507 INFO L226 Difference]: Without dead ends: 661 [2023-11-06 22:08:35,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:08:35,513 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 411 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:35,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1641 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:08:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-06 22:08:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 392. [2023-11-06 22:08:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 367 states have (on average 1.5122615803814714) internal successors, (555), 383 states have internal predecessors, (555), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 22:08:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 595 transitions. [2023-11-06 22:08:35,549 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 595 transitions. Word has length 64 [2023-11-06 22:08:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:35,550 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 595 transitions. [2023-11-06 22:08:35,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 595 transitions. [2023-11-06 22:08:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:08:35,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:35,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:35,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:08:35,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:35,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1263346924, now seen corresponding path program 1 times [2023-11-06 22:08:35,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386676608] [2023-11-06 22:08:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:35,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:35,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:35,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140560411] [2023-11-06 22:08:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:35,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:35,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:35,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:35,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:08:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:36,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:08:36,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:36,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:36,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:36,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386676608] [2023-11-06 22:08:36,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:36,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140560411] [2023-11-06 22:08:36,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140560411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:36,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:36,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:36,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770389658] [2023-11-06 22:08:36,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:36,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:36,074 INFO L87 Difference]: Start difference. First operand 392 states and 595 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:36,175 INFO L93 Difference]: Finished difference Result 801 states and 1217 transitions. [2023-11-06 22:08:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-06 22:08:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:36,179 INFO L225 Difference]: With dead ends: 801 [2023-11-06 22:08:36,179 INFO L226 Difference]: Without dead ends: 413 [2023-11-06 22:08:36,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:36,182 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 9 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:36,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1131 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:08:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-11-06 22:08:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2023-11-06 22:08:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 387 states have (on average 1.4857881136950903) internal successors, (575), 403 states have internal predecessors, (575), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 22:08:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 615 transitions. [2023-11-06 22:08:36,198 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 615 transitions. Word has length 85 [2023-11-06 22:08:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:36,199 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 615 transitions. [2023-11-06 22:08:36,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 615 transitions. [2023-11-06 22:08:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:08:36,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:36,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:36,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:36,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:36,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:36,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash -566612240, now seen corresponding path program 1 times [2023-11-06 22:08:36,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:36,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724436429] [2023-11-06 22:08:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:36,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:36,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336263629] [2023-11-06 22:08:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:36,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:36,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:36,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:36,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:08:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:36,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:08:36,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:36,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:36,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:36,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724436429] [2023-11-06 22:08:36,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336263629] [2023-11-06 22:08:36,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336263629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:36,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:36,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:36,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902258526] [2023-11-06 22:08:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:36,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:36,830 INFO L87 Difference]: Start difference. First operand 412 states and 615 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:36,953 INFO L93 Difference]: Finished difference Result 807 states and 1213 transitions. [2023-11-06 22:08:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:08:36,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-06 22:08:36,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:36,957 INFO L225 Difference]: With dead ends: 807 [2023-11-06 22:08:36,957 INFO L226 Difference]: Without dead ends: 399 [2023-11-06 22:08:36,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 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 22:08:36,959 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 165 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:36,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1544 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:08:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-11-06 22:08:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 398. [2023-11-06 22:08:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 373 states have (on average 1.4852546916890081) internal successors, (554), 389 states have internal predecessors, (554), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 22:08:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 594 transitions. [2023-11-06 22:08:36,975 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 594 transitions. Word has length 85 [2023-11-06 22:08:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:36,975 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 594 transitions. [2023-11-06 22:08:36,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 594 transitions. [2023-11-06 22:08:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:08:36,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:36,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:36,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:37,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:37,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:37,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1142146014, now seen corresponding path program 1 times [2023-11-06 22:08:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314294307] [2023-11-06 22:08:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:37,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:37,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:37,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664080773] [2023-11-06 22:08:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:37,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:37,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:37,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:37,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:08:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:37,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:08:37,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:37,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:37,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314294307] [2023-11-06 22:08:37,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:37,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664080773] [2023-11-06 22:08:37,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664080773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:37,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:37,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:37,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453487806] [2023-11-06 22:08:37,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:37,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:37,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:37,866 INFO L87 Difference]: Start difference. First operand 398 states and 594 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:37,993 INFO L93 Difference]: Finished difference Result 1055 states and 1585 transitions. [2023-11-06 22:08:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-06 22:08:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:38,003 INFO L225 Difference]: With dead ends: 1055 [2023-11-06 22:08:38,005 INFO L226 Difference]: Without dead ends: 661 [2023-11-06 22:08:38,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:38,007 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 341 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:38,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1308 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:08:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-06 22:08:38,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 658. [2023-11-06 22:08:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 632 states have (on average 1.5015822784810127) internal successors, (949), 648 states have internal predecessors, (949), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-06 22:08:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 991 transitions. [2023-11-06 22:08:38,057 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 991 transitions. Word has length 85 [2023-11-06 22:08:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:38,058 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 991 transitions. [2023-11-06 22:08:38,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 991 transitions. [2023-11-06 22:08:38,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-06 22:08:38,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:38,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:38,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:38,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:38,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:38,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1444208988, now seen corresponding path program 1 times [2023-11-06 22:08:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750194946] [2023-11-06 22:08:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:38,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:38,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679173031] [2023-11-06 22:08:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:38,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:38,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:38,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:38,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:08:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:38,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:08:38,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:08:39,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:39,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:39,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750194946] [2023-11-06 22:08:39,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679173031] [2023-11-06 22:08:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679173031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:39,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:39,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396290379] [2023-11-06 22:08:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:39,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:39,005 INFO L87 Difference]: Start difference. First operand 658 states and 991 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:39,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:39,054 INFO L93 Difference]: Finished difference Result 1198 states and 1808 transitions. [2023-11-06 22:08:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:08:39,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2023-11-06 22:08:39,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:39,060 INFO L225 Difference]: With dead ends: 1198 [2023-11-06 22:08:39,060 INFO L226 Difference]: Without dead ends: 661 [2023-11-06 22:08:39,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 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 22:08:39,062 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 2 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:39,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1745 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:08:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-06 22:08:39,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-11-06 22:08:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 634 states have (on average 1.501577287066246) internal successors, (952), 651 states have internal predecessors, (952), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-06 22:08:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 995 transitions. [2023-11-06 22:08:39,089 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 995 transitions. Word has length 100 [2023-11-06 22:08:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:39,090 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 995 transitions. [2023-11-06 22:08:39,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 995 transitions. [2023-11-06 22:08:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 22:08:39,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:39,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:39,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:39,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:08:39,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:39,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221958, now seen corresponding path program 1 times [2023-11-06 22:08:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:39,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831238568] [2023-11-06 22:08:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:39,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:39,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741494122] [2023-11-06 22:08:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:39,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:39,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:39,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:08:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:39,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:08:39,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:39,906 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 11 treesize of output 7 [2023-11-06 22:08:39,978 INFO L322 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2023-11-06 22:08:39,979 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 1 case distinctions, treesize of input 26 treesize of output 26 [2023-11-06 22:08:40,400 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:08:40,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 23 [2023-11-06 22:08:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:08:40,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:40,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831238568] [2023-11-06 22:08:40,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741494122] [2023-11-06 22:08:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741494122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:40,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:08:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815512401] [2023-11-06 22:08:40,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:40,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:08:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:08:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:08:40,573 INFO L87 Difference]: Start difference. First operand 661 states and 995 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:42,377 INFO L93 Difference]: Finished difference Result 1453 states and 2183 transitions. [2023-11-06 22:08:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:08:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2023-11-06 22:08:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:42,383 INFO L225 Difference]: With dead ends: 1453 [2023-11-06 22:08:42,383 INFO L226 Difference]: Without dead ends: 874 [2023-11-06 22:08:42,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:08:42,385 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 665 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:42,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 3455 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:08:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2023-11-06 22:08:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 693. [2023-11-06 22:08:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 666 states have (on average 1.484984984984985) internal successors, (989), 683 states have internal predecessors, (989), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-06 22:08:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1032 transitions. [2023-11-06 22:08:42,414 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1032 transitions. Word has length 102 [2023-11-06 22:08:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:42,415 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1032 transitions. [2023-11-06 22:08:42,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1032 transitions. [2023-11-06 22:08:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 22:08:42,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:42,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:42,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:42,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:42,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:42,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1650156356, now seen corresponding path program 1 times [2023-11-06 22:08:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884830822] [2023-11-06 22:08:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:42,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:42,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:42,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483984664] [2023-11-06 22:08:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:42,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:42,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:42,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:42,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:08:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:43,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:08:43,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:08:43,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:43,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:43,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884830822] [2023-11-06 22:08:43,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:43,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483984664] [2023-11-06 22:08:43,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483984664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:43,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:43,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:43,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384363894] [2023-11-06 22:08:43,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:43,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:43,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:43,136 INFO L87 Difference]: Start difference. First operand 693 states and 1032 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:43,305 INFO L93 Difference]: Finished difference Result 1472 states and 2225 transitions. [2023-11-06 22:08:43,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:43,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2023-11-06 22:08:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:43,312 INFO L225 Difference]: With dead ends: 1472 [2023-11-06 22:08:43,312 INFO L226 Difference]: Without dead ends: 881 [2023-11-06 22:08:43,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:43,315 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 142 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:43,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2251 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:08:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-06 22:08:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 716. [2023-11-06 22:08:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 689 states have (on average 1.467343976777939) internal successors, (1011), 706 states have internal predecessors, (1011), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-06 22:08:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1054 transitions. [2023-11-06 22:08:43,347 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1054 transitions. Word has length 102 [2023-11-06 22:08:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:43,348 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1054 transitions. [2023-11-06 22:08:43,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1054 transitions. [2023-11-06 22:08:43,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:08:43,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:43,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:43,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:43,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:43,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:43,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1572179631, now seen corresponding path program 1 times [2023-11-06 22:08:43,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:43,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66046055] [2023-11-06 22:08:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:43,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:43,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920283574] [2023-11-06 22:08:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:43,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:43,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:08:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:44,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:08:44,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:44,085 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 11 treesize of output 7 [2023-11-06 22:08:44,143 INFO L322 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2023-11-06 22:08:44,143 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 1 case distinctions, treesize of input 26 treesize of output 26 [2023-11-06 22:08:44,678 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:08:44,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 23 [2023-11-06 22:08:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:08:44,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:44,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66046055] [2023-11-06 22:08:44,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920283574] [2023-11-06 22:08:44,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920283574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:44,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:45,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:08:45,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616083230] [2023-11-06 22:08:45,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:45,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:08:45,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:45,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:08:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:08:45,002 INFO L87 Difference]: Start difference. First operand 716 states and 1054 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:08:47,900 INFO L93 Difference]: Finished difference Result 1499 states and 2231 transitions. [2023-11-06 22:08:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:08:47,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2023-11-06 22:08:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:08:47,907 INFO L225 Difference]: With dead ends: 1499 [2023-11-06 22:08:47,907 INFO L226 Difference]: Without dead ends: 897 [2023-11-06 22:08:47,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:08:47,909 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 863 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:08:47,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 4715 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:08:47,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-11-06 22:08:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 718. [2023-11-06 22:08:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 691 states have (on average 1.4659913169319827) internal successors, (1013), 708 states have internal predecessors, (1013), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-06 22:08:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1056 transitions. [2023-11-06 22:08:47,941 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1056 transitions. Word has length 103 [2023-11-06 22:08:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:08:47,942 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1056 transitions. [2023-11-06 22:08:47,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:08:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1056 transitions. [2023-11-06 22:08:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 22:08:47,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:08:47,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:47,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:48,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:48,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:08:48,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1419527885, now seen corresponding path program 1 times [2023-11-06 22:08:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479363533] [2023-11-06 22:08:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:48,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124801186] [2023-11-06 22:08:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:48,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:48,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:48,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:48,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de4def8-0ac2-4c2d-b6cf-b435739fbf49/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:08:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:48,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-06 22:08:48,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:48,760 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 11 treesize of output 7 [2023-11-06 22:08:48,773 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 6 treesize of output 5 [2023-11-06 22:08:48,820 INFO L322 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2023-11-06 22:08:48,820 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 1 case distinctions, treesize of input 26 treesize of output 26 [2023-11-06 22:08:48,827 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:08:48,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-11-06 22:08:49,070 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 22:08:49,087 INFO L322 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-11-06 22:08:49,087 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-11-06 22:08:49,097 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 11 treesize of output 7 [2023-11-06 22:08:49,196 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 18 treesize of output 10 [2023-11-06 22:08:49,201 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-06 22:08:49,386 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:08:49,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 22:08:49,394 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 24 treesize of output 11 [2023-11-06 22:08:52,502 INFO L217 Elim1Store]: Index analysis took 136 ms [2023-11-06 22:11:19,304 WARN L293 SmtUtils]: Spent 2.39m on a formula simplification. DAG size of input: 57572 DAG size of output: 1 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-06 22:11:19,304 INFO L322 Elim1Store]: treesize reduction 1164820, result has 0.0 percent of original size [2023-11-06 22:11:19,520 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 240 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 290 new quantified variables, introduced 7086 case distinctions, treesize of input 557654227 treesize of output 121738817