./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/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 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:23,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:23,763 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:07:23,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:23,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:23,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:23,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:23,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:23,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:07:23,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:07:23,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:23,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:23,847 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:23,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:23,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:07:23,853 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:07:23,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:23,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:07:23,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:23,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:07:23,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:07:23,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:07:23,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:07:23,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:23,858 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:23,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:23,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:23,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:07:23,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:23,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:23,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:07:23,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:07:23,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:23,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:07:23,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:07:23,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:07:23,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:07:23,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:07:23,885 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:07:23,885 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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 [2023-11-06 22:07:24,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:24,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:24,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:24,221 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:24,221 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:24,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2023-11-06 22:07:27,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:27,906 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:27,911 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2023-11-06 22:07:27,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/data/43cf26e0b/1569d557ed1e4c92ad818ea4434a4fee/FLAG4409b5971 [2023-11-06 22:07:27,969 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/data/43cf26e0b/1569d557ed1e4c92ad818ea4434a4fee [2023-11-06 22:07:27,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:27,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:27,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:27,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:27,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:27,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:27" (1/1) ... [2023-11-06 22:07:27,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c97f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:27, skipping insertion in model container [2023-11-06 22:07:27,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:27" (1/1) ... [2023-11-06 22:07:28,069 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:28,529 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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2023-11-06 22:07:28,715 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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2023-11-06 22:07:28,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:28,770 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:28,831 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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2023-11-06 22:07:28,909 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_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2023-11-06 22:07:28,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:28,963 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:07:28,971 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:28,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28 WrapperNode [2023-11-06 22:07:28,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:28,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:28,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:28,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:28,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,131 INFO L138 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1494 [2023-11-06 22:07:29,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:29,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:29,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:29,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:29,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:29,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:29,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:29,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:29,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (1/1) ... [2023-11-06 22:07:29,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:29,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:29,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:29,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:07:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:07:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:07:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:07:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:07:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:07:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-06 22:07:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-06 22:07:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:07:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:07:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:07:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:07:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 22:07:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:07:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:07:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:07:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:29,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:29,858 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:29,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:07:31,993 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:07:32,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:07:32,013 INFO L302 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-06 22:07:32,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:32 BoogieIcfgContainer [2023-11-06 22:07:32,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:07:32,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:07:32,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:07:32,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:07:32,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:27" (1/3) ... [2023-11-06 22:07:32,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e150e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:32, skipping insertion in model container [2023-11-06 22:07:32,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:28" (2/3) ... [2023-11-06 22:07:32,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e150e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:32, skipping insertion in model container [2023-11-06 22:07:32,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:32" (3/3) ... [2023-11-06 22:07:32,030 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-2.i [2023-11-06 22:07:32,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:07:32,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:07:32,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:07:32,138 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;@153392bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:07:32,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:07:32,144 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 22:07:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:07:32,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:32,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:32,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:32,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash 193027328, now seen corresponding path program 1 times [2023-11-06 22:07:32,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:32,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047088639] [2023-11-06 22:07:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:32,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:32,338 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 22:07:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:32,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047088639] [2023-11-06 22:07:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047088639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:32,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:32,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:07:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129190290] [2023-11-06 22:07:32,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:32,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:07:32,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:32,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:07:32,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:07:32,390 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 22:07:32,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:32,489 INFO L93 Difference]: Finished difference Result 854 states and 1457 transitions. [2023-11-06 22:07:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:07:32,491 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 22:07:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:32,507 INFO L225 Difference]: With dead ends: 854 [2023-11-06 22:07:32,507 INFO L226 Difference]: Without dead ends: 390 [2023-11-06 22:07:32,514 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 22:07:32,518 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 22:07:32,519 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 22:07:32,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-06 22:07:32,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2023-11-06 22:07:32,594 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 22:07:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 593 transitions. [2023-11-06 22:07:32,602 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 593 transitions. Word has length 9 [2023-11-06 22:07:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:32,602 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 593 transitions. [2023-11-06 22:07:32,602 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 22:07:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 593 transitions. [2023-11-06 22:07:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:07:32,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:32,609 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 22:07:32,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:07:32,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:32,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash 420003896, now seen corresponding path program 1 times [2023-11-06 22:07:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:32,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304092341] [2023-11-06 22:07:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:32,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:33,093 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 22:07:33,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:33,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304092341] [2023-11-06 22:07:33,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304092341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:33,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:33,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:07:33,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62772360] [2023-11-06 22:07:33,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:33,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:07:33,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:07:33,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:07:33,098 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 22:07:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:34,137 INFO L93 Difference]: Finished difference Result 869 states and 1336 transitions. [2023-11-06 22:07:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:07:34,142 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 22:07:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:34,154 INFO L225 Difference]: With dead ends: 869 [2023-11-06 22:07:34,154 INFO L226 Difference]: Without dead ends: 661 [2023-11-06 22:07:34,156 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 22:07:34,159 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 411 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:34,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1641 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:07:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-06 22:07:34,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 392. [2023-11-06 22:07:34,227 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 22:07:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 595 transitions. [2023-11-06 22:07:34,232 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 595 transitions. Word has length 64 [2023-11-06 22:07:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:34,232 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 595 transitions. [2023-11-06 22:07:34,233 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 22:07:34,233 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 595 transitions. [2023-11-06 22:07:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:07:34,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:34,238 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 22:07:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:07:34,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:34,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1263346924, now seen corresponding path program 1 times [2023-11-06 22:07:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514492690] [2023-11-06 22:07:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:34,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:34,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168315738] [2023-11-06 22:07:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:34,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:34,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:34,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:07:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:34,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:07:34,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:34,837 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 22:07:34,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:34,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:34,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514492690] [2023-11-06 22:07:34,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168315738] [2023-11-06 22:07:34,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168315738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:34,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:07:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958070800] [2023-11-06 22:07:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:34,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:34,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:34,850 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 22:07:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:34,979 INFO L93 Difference]: Finished difference Result 801 states and 1217 transitions. [2023-11-06 22:07:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:34,980 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 22:07:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:34,985 INFO L225 Difference]: With dead ends: 801 [2023-11-06 22:07:34,986 INFO L226 Difference]: Without dead ends: 413 [2023-11-06 22:07:34,987 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 22:07:34,993 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 22:07:34,994 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 22:07:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-11-06 22:07:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2023-11-06 22:07:35,011 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 22:07:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 615 transitions. [2023-11-06 22:07:35,014 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 615 transitions. Word has length 85 [2023-11-06 22:07:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:35,015 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 615 transitions. [2023-11-06 22:07:35,015 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 22:07:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 615 transitions. [2023-11-06 22:07:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:07:35,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:35,020 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 22:07:35,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:35,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:35,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:35,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash -566612240, now seen corresponding path program 1 times [2023-11-06 22:07:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:35,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566875509] [2023-11-06 22:07:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:35,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:35,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446040753] [2023-11-06 22:07:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:35,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:35,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:07:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:35,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:07:35,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:35,646 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 22:07:35,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:35,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:35,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566875509] [2023-11-06 22:07:35,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:35,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446040753] [2023-11-06 22:07:35,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446040753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:35,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:35,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:07:35,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283080089] [2023-11-06 22:07:35,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:35,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:07:35,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:07:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:07:35,651 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 22:07:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:35,759 INFO L93 Difference]: Finished difference Result 807 states and 1213 transitions. [2023-11-06 22:07:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:07:35,760 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 22:07:35,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:35,765 INFO L225 Difference]: With dead ends: 807 [2023-11-06 22:07:35,765 INFO L226 Difference]: Without dead ends: 399 [2023-11-06 22:07:35,767 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 22:07:35,770 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 22:07:35,773 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 22:07:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-11-06 22:07:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 398. [2023-11-06 22:07:35,807 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 22:07:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 594 transitions. [2023-11-06 22:07:35,811 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 594 transitions. Word has length 85 [2023-11-06 22:07:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:35,813 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 594 transitions. [2023-11-06 22:07:35,814 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 22:07:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 594 transitions. [2023-11-06 22:07:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:07:35,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:35,819 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 22:07:35,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:36,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:36,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1142146014, now seen corresponding path program 1 times [2023-11-06 22:07:36,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:36,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861511524] [2023-11-06 22:07:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:36,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:36,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579473706] [2023-11-06 22:07:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:36,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:36,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:36,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:36,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:07:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:36,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:07:36,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:36,747 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 22:07:36,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:36,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:36,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861511524] [2023-11-06 22:07:36,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579473706] [2023-11-06 22:07:36,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579473706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:36,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:36,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:07:36,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560306047] [2023-11-06 22:07:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:36,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:36,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:36,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:36,753 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 22:07:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:36,929 INFO L93 Difference]: Finished difference Result 1055 states and 1585 transitions. [2023-11-06 22:07:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:36,930 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 22:07:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:36,937 INFO L225 Difference]: With dead ends: 1055 [2023-11-06 22:07:36,937 INFO L226 Difference]: Without dead ends: 661 [2023-11-06 22:07:36,939 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 22:07:36,940 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 22:07:36,941 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 22:07:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-06 22:07:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 658. [2023-11-06 22:07:36,972 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 22:07:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 991 transitions. [2023-11-06 22:07:36,978 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 991 transitions. Word has length 85 [2023-11-06 22:07:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:36,979 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 991 transitions. [2023-11-06 22:07:36,980 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 22:07:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 991 transitions. [2023-11-06 22:07:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-06 22:07:36,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:36,982 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 22:07:36,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:07:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:37,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:37,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1444208988, now seen corresponding path program 1 times [2023-11-06 22:07:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42027312] [2023-11-06 22:07:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:37,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:37,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35885125] [2023-11-06 22:07:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:37,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:37,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:07:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:38,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:07:38,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:38,092 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 22:07:38,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:38,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42027312] [2023-11-06 22:07:38,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:38,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35885125] [2023-11-06 22:07:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35885125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:38,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:38,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:07:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882984376] [2023-11-06 22:07:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:38,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:07:38,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:07:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:07:38,098 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 22:07:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:38,161 INFO L93 Difference]: Finished difference Result 1198 states and 1808 transitions. [2023-11-06 22:07:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:07:38,162 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 22:07:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:38,168 INFO L225 Difference]: With dead ends: 1198 [2023-11-06 22:07:38,168 INFO L226 Difference]: Without dead ends: 661 [2023-11-06 22:07:38,170 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 22:07:38,171 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 22:07:38,172 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 22:07:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-06 22:07:38,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-11-06 22:07:38,196 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 22:07:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 995 transitions. [2023-11-06 22:07:38,201 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 995 transitions. Word has length 100 [2023-11-06 22:07:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:38,202 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 995 transitions. [2023-11-06 22:07:38,203 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 22:07:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 995 transitions. [2023-11-06 22:07:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 22:07:38,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:38,205 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 22:07:38,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:38,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:38,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:38,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221958, now seen corresponding path program 1 times [2023-11-06 22:07:38,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:38,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96968841] [2023-11-06 22:07:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:38,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716651409] [2023-11-06 22:07:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:38,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:38,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:38,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:38,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:07:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:39,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:07:39,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:39,062 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 22:07:39,139 INFO L322 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2023-11-06 22:07:39,139 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 22:07:39,730 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:07:39,731 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 22:07:39,921 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 22:07:39,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:39,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:39,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96968841] [2023-11-06 22:07:39,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:39,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716651409] [2023-11-06 22:07:39,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716651409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:39,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:39,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:07:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646950599] [2023-11-06 22:07:39,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:39,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:07:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:39,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:07:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:07:39,925 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 22:07:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:42,019 INFO L93 Difference]: Finished difference Result 1453 states and 2183 transitions. [2023-11-06 22:07:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:07:42,020 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 22:07:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:42,027 INFO L225 Difference]: With dead ends: 1453 [2023-11-06 22:07:42,027 INFO L226 Difference]: Without dead ends: 874 [2023-11-06 22:07:42,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:07:42,031 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 665 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:42,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 3455 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:07:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2023-11-06 22:07:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 693. [2023-11-06 22:07:42,075 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 22:07:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1032 transitions. [2023-11-06 22:07:42,082 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1032 transitions. Word has length 102 [2023-11-06 22:07:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:42,082 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1032 transitions. [2023-11-06 22:07:42,082 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 22:07:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1032 transitions. [2023-11-06 22:07:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 22:07:42,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:42,089 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 22:07:42,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:42,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:42,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:42,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:42,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1650156356, now seen corresponding path program 1 times [2023-11-06 22:07:42,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501241184] [2023-11-06 22:07:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:42,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:42,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559977111] [2023-11-06 22:07:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:42,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:42,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:42,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:07:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:42,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:07:42,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:42,884 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 22:07:42,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501241184] [2023-11-06 22:07:42,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559977111] [2023-11-06 22:07:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559977111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:42,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:42,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:07:42,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053468732] [2023-11-06 22:07:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:42,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:07:42,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:07:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:07:42,888 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 22:07:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:43,059 INFO L93 Difference]: Finished difference Result 1472 states and 2225 transitions. [2023-11-06 22:07:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:07:43,060 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 22:07:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:43,066 INFO L225 Difference]: With dead ends: 1472 [2023-11-06 22:07:43,067 INFO L226 Difference]: Without dead ends: 881 [2023-11-06 22:07:43,069 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 22:07:43,070 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 22:07:43,071 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 22:07:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-06 22:07:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 716. [2023-11-06 22:07:43,102 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 22:07:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1054 transitions. [2023-11-06 22:07:43,107 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1054 transitions. Word has length 102 [2023-11-06 22:07:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:43,108 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1054 transitions. [2023-11-06 22:07:43,108 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 22:07:43,108 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1054 transitions. [2023-11-06 22:07:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:07:43,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:43,111 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 22:07:43,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:43,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:07:43,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:43,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1572179631, now seen corresponding path program 1 times [2023-11-06 22:07:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:43,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349473382] [2023-11-06 22:07:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:43,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:43,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:43,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180014307] [2023-11-06 22:07:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:43,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:43,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:07:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:43,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:07:43,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:43,953 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 22:07:44,027 INFO L322 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2023-11-06 22:07:44,028 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 22:07:44,655 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:07:44,656 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 22:07:45,082 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 22:07:45,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:45,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349473382] [2023-11-06 22:07:45,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180014307] [2023-11-06 22:07:45,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180014307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:07:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427855370] [2023-11-06 22:07:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:45,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:07:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:07:45,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:07:45,088 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 22:07:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:48,249 INFO L93 Difference]: Finished difference Result 1499 states and 2231 transitions. [2023-11-06 22:07:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:07:48,250 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 22:07:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:48,257 INFO L225 Difference]: With dead ends: 1499 [2023-11-06 22:07:48,258 INFO L226 Difference]: Without dead ends: 897 [2023-11-06 22:07:48,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:07:48,262 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 863 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:48,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 4715 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:07:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-11-06 22:07:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 718. [2023-11-06 22:07:48,295 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 22:07:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1056 transitions. [2023-11-06 22:07:48,300 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1056 transitions. Word has length 103 [2023-11-06 22:07:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:48,302 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1056 transitions. [2023-11-06 22:07:48,302 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 22:07:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1056 transitions. [2023-11-06 22:07:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 22:07:48,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:48,304 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 22:07:48,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:48,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:48,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:48,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1419527885, now seen corresponding path program 1 times [2023-11-06 22:07:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:48,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531304639] [2023-11-06 22:07:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:48,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28169005] [2023-11-06 22:07:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:48,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:48,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:48,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:48,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76d75887-c72a-4f3f-84e8-6ac0ee069ec3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:07:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:49,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-06 22:07:49,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:49,269 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 22:07:49,286 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 22:07:49,344 INFO L322 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2023-11-06 22:07:49,344 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 22:07:49,353 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:07:49,353 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 22:07:49,674 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 22:07:49,696 INFO L322 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-11-06 22:07:49,696 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 22:07:49,710 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 22:07:49,799 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 22:07:49,808 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 22:07:50,083 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:07:50,084 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 22:07:50,107 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 22:07:53,783 INFO L217 Elim1Store]: Index analysis took 161 ms [2023-11-06 22:10:26,952 WARN L293 SmtUtils]: Spent 2.50m 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 22:10:26,952 INFO L322 Elim1Store]: treesize reduction 1164820, result has 0.0 percent of original size [2023-11-06 22:10:27,343 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