./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:07:58,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:07:58,851 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:07:58,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:07:58,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:07:58,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:07:58,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:07:58,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:07:58,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:07:58,886 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:07:58,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:07:58,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:07:58,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:07:58,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:07:58,889 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:07:58,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:07:58,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:07:58,891 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:07:58,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:07:58,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:07:58,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:07:58,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:07:58,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:07:58,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:07:58,895 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:07:58,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:07:58,896 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:07:58,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:07:58,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:07:58,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:07:58,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:07:58,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:07:58,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:07:58,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:07:58,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:07:58,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:07:58,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:07:58,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:07:58,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:07:58,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:07:58,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:07:58,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:07:58,901 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_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 [2023-11-29 07:07:59,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:07:59,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:07:59,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:07:59,173 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:07:59,173 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:07:59,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive/gcd02.c [2023-11-29 07:08:01,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:08:02,158 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:08:02,158 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/sv-benchmarks/c/recursive/gcd02.c [2023-11-29 07:08:02,165 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/data/34f2fb3e1/aac6d8877eaf413ca42850d4c667a77f/FLAGc92a8be2a [2023-11-29 07:08:02,180 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/data/34f2fb3e1/aac6d8877eaf413ca42850d4c667a77f [2023-11-29 07:08:02,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:08:02,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:08:02,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:08:02,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:08:02,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:08:02,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df6e065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02, skipping insertion in model container [2023-11-29 07:08:02,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:08:02,347 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_ad82683e-5008-4643-bc3d-790614cafc3f/sv-benchmarks/c/recursive/gcd02.c[623,636] [2023-11-29 07:08:02,360 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_ad82683e-5008-4643-bc3d-790614cafc3f/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2023-11-29 07:08:02,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:08:02,370 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:08:02,381 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_ad82683e-5008-4643-bc3d-790614cafc3f/sv-benchmarks/c/recursive/gcd02.c[623,636] [2023-11-29 07:08:02,387 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_ad82683e-5008-4643-bc3d-790614cafc3f/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2023-11-29 07:08:02,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:08:02,399 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:08:02,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02 WrapperNode [2023-11-29 07:08:02,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:08:02,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:08:02,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:08:02,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:08:02,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,427 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-11-29 07:08:02,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:08:02,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:08:02,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:08:02,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:08:02,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,440 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,453 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 07:08:02,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:08:02,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:08:02,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:08:02,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:08:02,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (1/1) ... [2023-11-29 07:08:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:08:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:02,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:08:02,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:08:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:08:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2023-11-29 07:08:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2023-11-29 07:08:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:08:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:08:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2023-11-29 07:08:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2023-11-29 07:08:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:08:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:08:02,611 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:08:02,614 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:08:02,781 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:08:02,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:08:02,807 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 07:08:02,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:02 BoogieIcfgContainer [2023-11-29 07:08:02,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:08:02,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:08:02,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:08:02,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:08:02,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:08:02" (1/3) ... [2023-11-29 07:08:02,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e9deb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:02, skipping insertion in model container [2023-11-29 07:08:02,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:02" (2/3) ... [2023-11-29 07:08:02,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e9deb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:02, skipping insertion in model container [2023-11-29 07:08:02,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:02" (3/3) ... [2023-11-29 07:08:02,818 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd02.c [2023-11-29 07:08:02,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:08:02,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 07:08:02,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:08:02,885 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=LoopHeads, 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;@28c2c45a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:08:02,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 07:08:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 07:08:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 07:08:02,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:02,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:02,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:02,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash 192890080, now seen corresponding path program 1 times [2023-11-29 07:08:02,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:02,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129043966] [2023-11-29 07:08:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:02,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:03,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:03,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129043966] [2023-11-29 07:08:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129043966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:03,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:03,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 07:08:03,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979885375] [2023-11-29 07:08:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:03,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:08:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:03,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:08:03,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:08:03,258 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:08:03,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:03,388 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2023-11-29 07:08:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:08:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 07:08:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:03,397 INFO L225 Difference]: With dead ends: 71 [2023-11-29 07:08:03,397 INFO L226 Difference]: Without dead ends: 40 [2023-11-29 07:08:03,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:08:03,405 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:03,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-29 07:08:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-29 07:08:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 07:08:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-11-29 07:08:03,444 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2023-11-29 07:08:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:03,445 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-11-29 07:08:03,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:08:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-11-29 07:08:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 07:08:03,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:03,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:08:03,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:03,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash -344313825, now seen corresponding path program 1 times [2023-11-29 07:08:03,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:03,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371816698] [2023-11-29 07:08:03,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:03,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:03,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:03,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371816698] [2023-11-29 07:08:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371816698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:03,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:03,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 07:08:03,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318652938] [2023-11-29 07:08:03,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:03,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:08:03,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:08:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:08:03,585 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:08:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:03,685 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2023-11-29 07:08:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:08:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 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 13 [2023-11-29 07:08:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:03,689 INFO L225 Difference]: With dead ends: 58 [2023-11-29 07:08:03,689 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 07:08:03,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:08:03,692 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:03,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 97 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:03,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 07:08:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2023-11-29 07:08:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 36 states have internal predecessors, (44), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 07:08:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-11-29 07:08:03,709 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 13 [2023-11-29 07:08:03,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:03,709 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-11-29 07:08:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:08:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-11-29 07:08:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 07:08:03,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:03,711 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:03,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:08:03,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:03,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -341483680, now seen corresponding path program 1 times [2023-11-29 07:08:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:03,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203095768] [2023-11-29 07:08:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:03,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:03,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203095768] [2023-11-29 07:08:03,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203095768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:03,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:03,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:08:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88703641] [2023-11-29 07:08:03,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:03,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:08:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:03,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:08:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:08:03,845 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:08:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:03,979 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2023-11-29 07:08:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:08:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 2 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 13 [2023-11-29 07:08:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:03,982 INFO L225 Difference]: With dead ends: 62 [2023-11-29 07:08:03,982 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 07:08:03,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:08:03,985 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:03,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 154 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 07:08:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2023-11-29 07:08:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 07:08:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2023-11-29 07:08:04,002 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 13 [2023-11-29 07:08:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:04,003 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2023-11-29 07:08:04,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:08:04,003 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2023-11-29 07:08:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 07:08:04,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:04,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:04,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:08:04,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:04,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash -205465366, now seen corresponding path program 1 times [2023-11-29 07:08:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:04,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474897316] [2023-11-29 07:08:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:08:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:04,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:04,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474897316] [2023-11-29 07:08:04,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474897316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:04,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:04,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:08:04,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59810945] [2023-11-29 07:08:04,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:04,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:08:04,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:08:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:08:04,088 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:08:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:04,117 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2023-11-29 07:08:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:08:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-29 07:08:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:04,119 INFO L225 Difference]: With dead ends: 54 [2023-11-29 07:08:04,120 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 07:08:04,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:08:04,122 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:04,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 07:08:04,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-29 07:08:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 07:08:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-11-29 07:08:04,134 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 19 [2023-11-29 07:08:04,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:04,134 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-11-29 07:08:04,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:08:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-11-29 07:08:04,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 07:08:04,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:04,137 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] [2023-11-29 07:08:04,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 07:08:04,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:04,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:04,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1363529512, now seen corresponding path program 1 times [2023-11-29 07:08:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:04,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161319321] [2023-11-29 07:08:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:04,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:08:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:04,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:04,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161319321] [2023-11-29 07:08:04,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161319321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:04,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:04,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 07:08:04,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040231190] [2023-11-29 07:08:04,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:04,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 07:08:04,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:04,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 07:08:04,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:08:04,310 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 07:08:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:04,469 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2023-11-29 07:08:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 07:08:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-11-29 07:08:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:04,471 INFO L225 Difference]: With dead ends: 68 [2023-11-29 07:08:04,471 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 07:08:04,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:08:04,473 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:04,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 94 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 07:08:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2023-11-29 07:08:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-29 07:08:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-11-29 07:08:04,488 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 20 [2023-11-29 07:08:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:04,489 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-11-29 07:08:04,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 07:08:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-11-29 07:08:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 07:08:04,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:04,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 07:08:04,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:04,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1456991186, now seen corresponding path program 1 times [2023-11-29 07:08:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797258034] [2023-11-29 07:08:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:08:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:08:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:04,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797258034] [2023-11-29 07:08:04,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797258034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:04,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:04,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 07:08:04,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684943934] [2023-11-29 07:08:04,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:08:04,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:08:04,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:08:04,586 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 07:08:04,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:04,606 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2023-11-29 07:08:04,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:08:04,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-11-29 07:08:04,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:04,608 INFO L225 Difference]: With dead ends: 63 [2023-11-29 07:08:04,608 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 07:08:04,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:08:04,609 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:04,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:04,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 07:08:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-29 07:08:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-29 07:08:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-11-29 07:08:04,622 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 26 [2023-11-29 07:08:04,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:04,622 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-11-29 07:08:04,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 07:08:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-11-29 07:08:04,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 07:08:04,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:04,625 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] [2023-11-29 07:08:04,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:08:04,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:04,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1678448864, now seen corresponding path program 1 times [2023-11-29 07:08:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895394034] [2023-11-29 07:08:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:08:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:08:04,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:04,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895394034] [2023-11-29 07:08:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895394034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594841147] [2023-11-29 07:08:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:04,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:04,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:04,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:04,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:08:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:04,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 07:08:04,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:08:05,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:08:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594841147] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:05,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2023-11-29 07:08:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466989114] [2023-11-29 07:08:05,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:08:05,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:05,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:08:05,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:08:05,224 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 07:08:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:05,380 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2023-11-29 07:08:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:08:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2023-11-29 07:08:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:05,382 INFO L225 Difference]: With dead ends: 62 [2023-11-29 07:08:05,382 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 07:08:05,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:08:05,384 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:05,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 120 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 07:08:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2023-11-29 07:08:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 07:08:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-11-29 07:08:05,396 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2023-11-29 07:08:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:05,396 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-11-29 07:08:05,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 07:08:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-11-29 07:08:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 07:08:05,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:05,398 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] [2023-11-29 07:08:05,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:05,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 07:08:05,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:05,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1626959476, now seen corresponding path program 1 times [2023-11-29 07:08:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964561240] [2023-11-29 07:08:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 07:08:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:08:05,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964561240] [2023-11-29 07:08:05,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964561240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590789851] [2023-11-29 07:08:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:05,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:05,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:05,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:05,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:08:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:05,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 07:08:05,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:08:06,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:08:06,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590789851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:06,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:06,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-11-29 07:08:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287399708] [2023-11-29 07:08:06,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:06,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 07:08:06,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 07:08:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-11-29 07:08:06,413 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 07:08:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:06,684 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-11-29 07:08:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:08:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 28 [2023-11-29 07:08:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:06,686 INFO L225 Difference]: With dead ends: 73 [2023-11-29 07:08:06,686 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 07:08:06,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-11-29 07:08:06,688 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:06,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 220 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:08:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 07:08:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2023-11-29 07:08:06,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-29 07:08:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-11-29 07:08:06,703 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 28 [2023-11-29 07:08:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:06,703 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-11-29 07:08:06,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 07:08:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-11-29 07:08:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 07:08:06,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:06,706 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] [2023-11-29 07:08:06,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:08:06,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:06,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:06,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2138734868, now seen corresponding path program 1 times [2023-11-29 07:08:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:06,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851212904] [2023-11-29 07:08:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:06,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:06,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 07:08:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:08:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851212904] [2023-11-29 07:08:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851212904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:07,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:08:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695808196] [2023-11-29 07:08:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:07,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:08:07,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:08:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:08:07,097 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 07:08:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:07,222 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2023-11-29 07:08:07,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:08:07,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2023-11-29 07:08:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:07,224 INFO L225 Difference]: With dead ends: 79 [2023-11-29 07:08:07,224 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 07:08:07,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:08:07,225 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:07,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 108 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 07:08:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 62. [2023-11-29 07:08:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) [2023-11-29 07:08:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2023-11-29 07:08:07,238 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 28 [2023-11-29 07:08:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:07,238 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2023-11-29 07:08:07,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 07:08:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2023-11-29 07:08:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 07:08:07,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:07,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-11-29 07:08:07,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:08:07,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:07,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1097221548, now seen corresponding path program 1 times [2023-11-29 07:08:07,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:07,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326556885] [2023-11-29 07:08:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:07,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 07:08:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:08:07,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:07,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326556885] [2023-11-29 07:08:07,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326556885] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:07,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875388064] [2023-11-29 07:08:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:07,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:07,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:07,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:07,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:08:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:07,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 07:08:07,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:08:07,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:08:08,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875388064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:08,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:08,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 21 [2023-11-29 07:08:08,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22139458] [2023-11-29 07:08:08,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:08,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 07:08:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 07:08:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-11-29 07:08:08,391 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 21 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 07:08:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:08,709 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2023-11-29 07:08:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:08:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 35 [2023-11-29 07:08:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:08,711 INFO L225 Difference]: With dead ends: 88 [2023-11-29 07:08:08,711 INFO L226 Difference]: Without dead ends: 84 [2023-11-29 07:08:08,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-11-29 07:08:08,713 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:08,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 245 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:08:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-29 07:08:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2023-11-29 07:08:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 50 states have internal predecessors, (55), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (27), 17 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-29 07:08:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2023-11-29 07:08:08,728 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 35 [2023-11-29 07:08:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:08,728 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2023-11-29 07:08:08,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 07:08:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2023-11-29 07:08:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 07:08:08,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:08,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-11-29 07:08:08,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 07:08:08,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:08,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:08,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1054634932, now seen corresponding path program 1 times [2023-11-29 07:08:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:08,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370245784] [2023-11-29 07:08:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:08,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:09,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 07:08:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 07:08:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:09,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370245784] [2023-11-29 07:08:09,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370245784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:09,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289358452] [2023-11-29 07:08:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:09,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:09,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:08:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:09,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 07:08:09,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 07:08:09,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 07:08:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289358452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:09,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2023-11-29 07:08:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942454397] [2023-11-29 07:08:09,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 07:08:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 07:08:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:08:09,510 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 07:08:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:09,678 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-11-29 07:08:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 07:08:09,678 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2023-11-29 07:08:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:09,680 INFO L225 Difference]: With dead ends: 83 [2023-11-29 07:08:09,680 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 07:08:09,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:08:09,682 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:09,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 139 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 07:08:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2023-11-29 07:08:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (26), 16 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-29 07:08:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2023-11-29 07:08:09,693 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 35 [2023-11-29 07:08:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:09,693 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2023-11-29 07:08:09,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 07:08:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2023-11-29 07:08:09,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 07:08:09,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:09,695 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 07:08:09,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:08:09,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:09,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:09,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:09,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2077305336, now seen corresponding path program 1 times [2023-11-29 07:08:09,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:09,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749419722] [2023-11-29 07:08:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:08:10,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:10,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749419722] [2023-11-29 07:08:10,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749419722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:10,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120245960] [2023-11-29 07:08:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:10,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:10,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:10,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:10,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:08:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:10,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 07:08:10,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:08:10,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:08:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120245960] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:11,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:11,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2023-11-29 07:08:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101623833] [2023-11-29 07:08:11,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:11,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 07:08:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 07:08:11,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 07:08:11,484 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 39 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 07:08:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:12,160 INFO L93 Difference]: Finished difference Result 102 states and 133 transitions. [2023-11-29 07:08:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 07:08:12,161 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 36 [2023-11-29 07:08:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:12,163 INFO L225 Difference]: With dead ends: 102 [2023-11-29 07:08:12,163 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 07:08:12,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=351, Invalid=2199, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 07:08:12,166 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:12,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 390 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:08:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 07:08:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2023-11-29 07:08:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 48 states have internal predecessors, (51), 11 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (23), 14 states have call predecessors, (23), 11 states have call successors, (23) [2023-11-29 07:08:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-11-29 07:08:12,180 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 36 [2023-11-29 07:08:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:12,180 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-11-29 07:08:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 07:08:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-11-29 07:08:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 07:08:12,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:12,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 07:08:12,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:12,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:12,384 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:12,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:12,385 INFO L85 PathProgramCache]: Analyzing trace with hash 511799736, now seen corresponding path program 2 times [2023-11-29 07:08:12,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:12,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204659563] [2023-11-29 07:08:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:12,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:08:12,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:12,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204659563] [2023-11-29 07:08:12,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204659563] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:12,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799677815] [2023-11-29 07:08:12,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:08:12,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:12,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:12,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:12,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:08:12,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:08:12,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:12,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 07:08:12,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 07:08:12,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:08:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799677815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:13,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:13,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 23 [2023-11-29 07:08:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144212483] [2023-11-29 07:08:13,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:13,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 07:08:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 07:08:13,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-11-29 07:08:13,415 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 23 states, 20 states have (on average 2.3) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-29 07:08:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:13,755 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2023-11-29 07:08:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:08:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.3) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 36 [2023-11-29 07:08:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:13,757 INFO L225 Difference]: With dead ends: 80 [2023-11-29 07:08:13,757 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 07:08:13,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 07:08:13,759 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:13,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 212 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:08:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 07:08:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2023-11-29 07:08:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 10 states have call successors, (10), 4 states have call predecessors, (10), 9 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2023-11-29 07:08:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-29 07:08:13,769 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 36 [2023-11-29 07:08:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:13,769 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-29 07:08:13,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.3) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-29 07:08:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-29 07:08:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 07:08:13,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:13,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:13,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:08:13,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:13,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:13,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2085961572, now seen corresponding path program 2 times [2023-11-29 07:08:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:13,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047252311] [2023-11-29 07:08:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:13,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:14,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:08:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047252311] [2023-11-29 07:08:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047252311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131899704] [2023-11-29 07:08:14,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:08:14,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:14,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:14,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:14,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:08:14,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:08:14,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:14,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 07:08:14,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:08:14,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 07:08:16,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131899704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:16,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:16,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 27 [2023-11-29 07:08:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128771280] [2023-11-29 07:08:16,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:16,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 07:08:16,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 07:08:16,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-11-29 07:08:16,122 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-29 07:08:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:16,522 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2023-11-29 07:08:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:08:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) Word has length 50 [2023-11-29 07:08:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:16,524 INFO L225 Difference]: With dead ends: 93 [2023-11-29 07:08:16,524 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 07:08:16,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 07:08:16,526 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 85 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:16,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 322 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:08:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 07:08:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2023-11-29 07:08:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 11 states have call successors, (11), 4 states have call predecessors, (11), 12 states have return successors, (28), 17 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-29 07:08:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2023-11-29 07:08:16,538 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 50 [2023-11-29 07:08:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:16,539 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2023-11-29 07:08:16,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-29 07:08:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2023-11-29 07:08:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 07:08:16,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:16,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:16,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:08:16,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 07:08:16,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:16,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash -267988016, now seen corresponding path program 3 times [2023-11-29 07:08:16,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:16,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985303850] [2023-11-29 07:08:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 07:08:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:16,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 07:08:17,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:17,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985303850] [2023-11-29 07:08:17,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985303850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:17,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941808593] [2023-11-29 07:08:17,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 07:08:17,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:17,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:17,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:17,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:08:17,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 07:08:17,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:17,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 07:08:17,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 07:08:17,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:08:18,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941808593] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:18,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:18,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 32 [2023-11-29 07:08:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310574459] [2023-11-29 07:08:18,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:18,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 07:08:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 07:08:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:08:18,032 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 32 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 28 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 07:08:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:18,380 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2023-11-29 07:08:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 07:08:18,380 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 28 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) Word has length 42 [2023-11-29 07:08:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:18,381 INFO L225 Difference]: With dead ends: 83 [2023-11-29 07:08:18,381 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 07:08:18,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 07:08:18,383 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:18,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 260 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:08:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 07:08:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2023-11-29 07:08:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (24), 15 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 07:08:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2023-11-29 07:08:18,392 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 42 [2023-11-29 07:08:18,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:18,392 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2023-11-29 07:08:18,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 28 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 07:08:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2023-11-29 07:08:18,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 07:08:18,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:18,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:18,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:08:18,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 07:08:18,594 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:18,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1480464800, now seen corresponding path program 4 times [2023-11-29 07:08:18,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:18,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097855596] [2023-11-29 07:08:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:18,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 07:08:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:18,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097855596] [2023-11-29 07:08:18,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097855596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:18,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059034093] [2023-11-29 07:08:18,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 07:08:18,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:18,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:18,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:08:19,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 07:08:19,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:19,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 07:08:19,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 07:08:19,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 07:08:20,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059034093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:20,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:20,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-11-29 07:08:20,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18614045] [2023-11-29 07:08:20,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:20,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 07:08:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:20,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 07:08:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2023-11-29 07:08:20,240 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 31 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 07:08:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:20,560 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2023-11-29 07:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:08:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) Word has length 43 [2023-11-29 07:08:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:20,561 INFO L225 Difference]: With dead ends: 93 [2023-11-29 07:08:20,561 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 07:08:20,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 07:08:20,562 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:20,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 325 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:08:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 07:08:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2023-11-29 07:08:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 11 states have call successors, (11), 4 states have call predecessors, (11), 13 states have return successors, (29), 18 states have call predecessors, (29), 11 states have call successors, (29) [2023-11-29 07:08:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2023-11-29 07:08:20,571 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 43 [2023-11-29 07:08:20,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:20,572 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2023-11-29 07:08:20,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 07:08:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2023-11-29 07:08:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 07:08:20,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:20,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 07:08:20,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 07:08:20,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 07:08:20,777 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:20,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash -755000384, now seen corresponding path program 1 times [2023-11-29 07:08:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:20,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593202068] [2023-11-29 07:08:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 07:08:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593202068] [2023-11-29 07:08:21,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593202068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684825542] [2023-11-29 07:08:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:21,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:21,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:21,093 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:21,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:08:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:21,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 07:08:21,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 07:08:21,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:08:22,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684825542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:22,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:22,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 33 [2023-11-29 07:08:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377674915] [2023-11-29 07:08:22,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:22,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 07:08:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 07:08:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 07:08:22,531 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 33 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 26 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 07:08:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:23,064 INFO L93 Difference]: Finished difference Result 119 states and 158 transitions. [2023-11-29 07:08:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 07:08:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 26 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) Word has length 43 [2023-11-29 07:08:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:23,078 INFO L225 Difference]: With dead ends: 119 [2023-11-29 07:08:23,078 INFO L226 Difference]: Without dead ends: 115 [2023-11-29 07:08:23,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 07:08:23,079 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 78 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:23,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 331 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:08:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-29 07:08:23,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2023-11-29 07:08:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (32), 20 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 07:08:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2023-11-29 07:08:23,088 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 43 [2023-11-29 07:08:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:23,089 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2023-11-29 07:08:23,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 26 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 07:08:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2023-11-29 07:08:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 07:08:23,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:23,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 07:08:23,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 07:08:23,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 07:08:23,290 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:23,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash 648223744, now seen corresponding path program 2 times [2023-11-29 07:08:23,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:23,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262280712] [2023-11-29 07:08:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 07:08:23,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:23,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262280712] [2023-11-29 07:08:23,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262280712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:23,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825071718] [2023-11-29 07:08:23,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:08:23,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:23,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:23,522 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:23,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 07:08:23,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:08:23,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:23,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 07:08:23,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 07:08:23,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:08:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825071718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:24,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:24,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 22 [2023-11-29 07:08:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123996890] [2023-11-29 07:08:24,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:24,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 07:08:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 07:08:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-11-29 07:08:24,516 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-29 07:08:24,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:24,780 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2023-11-29 07:08:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 07:08:24,780 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) Word has length 43 [2023-11-29 07:08:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:24,781 INFO L225 Difference]: With dead ends: 108 [2023-11-29 07:08:24,781 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 07:08:24,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:08:24,783 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:24,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 239 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:08:24,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 07:08:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2023-11-29 07:08:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 11 states have call successors, (11), 4 states have call predecessors, (11), 16 states have return successors, (38), 23 states have call predecessors, (38), 11 states have call successors, (38) [2023-11-29 07:08:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2023-11-29 07:08:24,800 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 43 [2023-11-29 07:08:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:24,800 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2023-11-29 07:08:24,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-29 07:08:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2023-11-29 07:08:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 07:08:24,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:24,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 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] [2023-11-29 07:08:24,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 07:08:25,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 07:08:25,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:25,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:25,003 INFO L85 PathProgramCache]: Analyzing trace with hash 575852236, now seen corresponding path program 3 times [2023-11-29 07:08:25,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:25,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016117695] [2023-11-29 07:08:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:25,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:08:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:08:25,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:25,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016117695] [2023-11-29 07:08:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016117695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465820061] [2023-11-29 07:08:25,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 07:08:25,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:25,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:25,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:25,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 07:08:25,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 07:08:25,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:25,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 07:08:25,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 07:08:25,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 07:08:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465820061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:28,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:28,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 44 [2023-11-29 07:08:28,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829969652] [2023-11-29 07:08:28,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:28,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 07:08:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 07:08:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 07:08:28,197 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand has 44 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 32 states have internal predecessors, (88), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 07:08:28,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:28,860 INFO L93 Difference]: Finished difference Result 147 states and 195 transitions. [2023-11-29 07:08:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 07:08:28,860 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 32 states have internal predecessors, (88), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) Word has length 51 [2023-11-29 07:08:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:28,862 INFO L225 Difference]: With dead ends: 147 [2023-11-29 07:08:28,862 INFO L226 Difference]: Without dead ends: 143 [2023-11-29 07:08:28,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=326, Invalid=2980, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 07:08:28,870 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 68 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:28,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 443 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:08:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-29 07:08:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 96. [2023-11-29 07:08:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 64 states have internal predecessors, (72), 11 states have call successors, (11), 4 states have call predecessors, (11), 18 states have return successors, (44), 27 states have call predecessors, (44), 11 states have call successors, (44) [2023-11-29 07:08:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2023-11-29 07:08:28,881 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 51 [2023-11-29 07:08:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:28,881 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2023-11-29 07:08:28,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 32 states have internal predecessors, (88), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 07:08:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2023-11-29 07:08:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 07:08:28,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:28,882 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 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] [2023-11-29 07:08:28,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:08:29,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:29,083 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:29,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 610835820, now seen corresponding path program 4 times [2023-11-29 07:08:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:29,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615064718] [2023-11-29 07:08:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:29,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:08:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:08:29,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:29,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615064718] [2023-11-29 07:08:29,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615064718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:29,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461903300] [2023-11-29 07:08:29,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 07:08:29,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:29,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:29,396 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:29,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:08:29,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 07:08:29,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:29,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 07:08:29,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:08:29,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 07:08:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461903300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:31,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 36 [2023-11-29 07:08:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760505790] [2023-11-29 07:08:31,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 07:08:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 07:08:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 07:08:31,206 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 36 states, 33 states have (on average 2.272727272727273) internal successors, (75), 27 states have internal predecessors, (75), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 07:08:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:31,851 INFO L93 Difference]: Finished difference Result 134 states and 182 transitions. [2023-11-29 07:08:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 07:08:31,852 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.272727272727273) internal successors, (75), 27 states have internal predecessors, (75), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) Word has length 51 [2023-11-29 07:08:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:31,853 INFO L225 Difference]: With dead ends: 134 [2023-11-29 07:08:31,853 INFO L226 Difference]: Without dead ends: 130 [2023-11-29 07:08:31,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 85 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=335, Invalid=2215, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 07:08:31,854 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:31,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 473 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:08:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-29 07:08:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 69. [2023-11-29 07:08:31,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (22), 15 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-29 07:08:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2023-11-29 07:08:31,861 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 51 [2023-11-29 07:08:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:31,862 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2023-11-29 07:08:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.272727272727273) internal successors, (75), 27 states have internal predecessors, (75), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 07:08:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2023-11-29 07:08:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 07:08:31,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:31,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2023-11-29 07:08:31,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 07:08:32,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:32,063 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:32,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash -755482820, now seen corresponding path program 5 times [2023-11-29 07:08:32,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300682693] [2023-11-29 07:08:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:32,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:08:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:08:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:08:32,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:32,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300682693] [2023-11-29 07:08:32,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300682693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:32,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592223439] [2023-11-29 07:08:32,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 07:08:32,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:32,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:32,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:32,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 07:08:32,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 07:08:32,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:32,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 07:08:32,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:08:32,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:02,182 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (and (forall ((v_gcd_~y1_BEFORE_CALL_42 Int)) (or (< (* (div |c_gcd_#t~ret5| 2) 3) (+ 2 (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_42 3)) 6))) (< v_gcd_~y1_BEFORE_CALL_42 .cse0))) (forall ((v_gcd_~y1_BEFORE_CALL_42 Int) (v_y_72 Int)) (let ((.cse1 (* v_gcd_~y1_BEFORE_CALL_42 3))) (let ((.cse2 (div (+ (- 1) .cse1) 6))) (or (< (+ (* |c_gcd_#t~ret5| 3) 4) (+ (mod (+ 5 .cse1) 6) (* v_y_72 6))) (< (* v_y_72 3) .cse2) (< (+ |c_gcd_#t~ret5| v_y_72) (+ .cse2 1)) (< v_gcd_~y1_BEFORE_CALL_42 .cse0))))) (forall ((v_gcd_~y1_BEFORE_CALL_42 Int)) (or (< (* 3 (div (+ (- 1) |c_gcd_#t~ret5|) 2)) (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_42 3)) 6)) (< v_gcd_~y1_BEFORE_CALL_42 .cse0))))) is different from false [2023-11-29 07:09:52,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592223439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:52,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:09:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2023-11-29 07:09:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574709264] [2023-11-29 07:09:52,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:52,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 07:09:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:52,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 07:09:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=609, Unknown=18, NotChecked=50, Total=756 [2023-11-29 07:09:52,155 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 07:09:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:53,006 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2023-11-29 07:09:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:09:53,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) Word has length 50 [2023-11-29 07:09:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:53,008 INFO L225 Difference]: With dead ends: 96 [2023-11-29 07:09:53,008 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 07:09:53,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 78.7s TimeCoverageRelationStatistics Valid=152, Invalid=1024, Unknown=18, NotChecked=66, Total=1260 [2023-11-29 07:09:53,009 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:53,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 331 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 07:09:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 07:09:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2023-11-29 07:09:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 16 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 07:09:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2023-11-29 07:09:53,015 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 50 [2023-11-29 07:09:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:53,015 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2023-11-29 07:09:53,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 07:09:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2023-11-29 07:09:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 07:09:53,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:53,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2023-11-29 07:09:53,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 07:09:53,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 07:09:53,216 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:53,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:53,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1085273852, now seen corresponding path program 6 times [2023-11-29 07:09:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:53,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489603833] [2023-11-29 07:09:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:53,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:53,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:09:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:09:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:09:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:09:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:09:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:09:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 07:09:53,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:53,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489603833] [2023-11-29 07:09:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489603833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726932422] [2023-11-29 07:09:53,926 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 07:09:53,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:53,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:53,927 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:53,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 07:09:54,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 07:09:54,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:09:54,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 07:09:54,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:09:54,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 07:09:56,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726932422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:56,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:56,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 34 [2023-11-29 07:09:56,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817442016] [2023-11-29 07:09:56,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:56,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 07:09:56,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 07:09:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 07:09:56,818 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 07:09:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:57,820 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2023-11-29 07:09:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:09:57,822 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) Word has length 50 [2023-11-29 07:09:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:57,823 INFO L225 Difference]: With dead ends: 90 [2023-11-29 07:09:57,823 INFO L226 Difference]: Without dead ends: 81 [2023-11-29 07:09:57,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 07:09:57,825 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:57,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 276 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 07:09:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-29 07:09:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2023-11-29 07:09:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 17 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 07:09:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2023-11-29 07:09:57,831 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 50 [2023-11-29 07:09:57,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:57,832 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2023-11-29 07:09:57,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 07:09:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2023-11-29 07:09:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 07:09:57,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:57,833 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:57,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 07:09:58,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 07:09:58,034 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:58,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1994498224, now seen corresponding path program 5 times [2023-11-29 07:09:58,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:58,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068678032] [2023-11-29 07:09:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:58,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:09:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:09:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:09:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:09:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:09:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:09:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:09:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 07:09:58,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:58,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068678032] [2023-11-29 07:09:58,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068678032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106538011] [2023-11-29 07:09:58,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 07:09:58,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:58,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:58,829 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:58,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 07:09:58,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 07:09:58,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:09:59,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 07:09:59,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 07:10:00,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:10:05,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106538011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:05,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:05,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 45 [2023-11-29 07:10:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624756984] [2023-11-29 07:10:05,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:05,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 07:10:05,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 07:10:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 07:10:05,205 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 45 states, 42 states have (on average 2.119047619047619) internal successors, (89), 34 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-11-29 07:10:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:06,690 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2023-11-29 07:10:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 07:10:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.119047619047619) internal successors, (89), 34 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 58 [2023-11-29 07:10:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:06,692 INFO L225 Difference]: With dead ends: 111 [2023-11-29 07:10:06,692 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 07:10:06,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=310, Invalid=2660, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 07:10:06,694 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:06,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 543 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:10:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 07:10:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2023-11-29 07:10:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 10 states have call successors, (10), 4 states have call predecessors, (10), 13 states have return successors, (27), 17 states have call predecessors, (27), 10 states have call successors, (27) [2023-11-29 07:10:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2023-11-29 07:10:06,700 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 58 [2023-11-29 07:10:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:06,700 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2023-11-29 07:10:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.119047619047619) internal successors, (89), 34 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-11-29 07:10:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2023-11-29 07:10:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 07:10:06,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:06,701 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:06,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 07:10:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 07:10:06,902 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:06,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash -356268368, now seen corresponding path program 7 times [2023-11-29 07:10:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:06,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003133948] [2023-11-29 07:10:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:10:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 07:10:07,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003133948] [2023-11-29 07:10:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003133948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676485884] [2023-11-29 07:10:07,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 07:10:07,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:07,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:07,594 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:07,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 07:10:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 07:10:07,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 07:10:08,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 07:10:11,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676485884] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:11,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:11,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 28 [2023-11-29 07:10:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919875456] [2023-11-29 07:10:11,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 07:10:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:11,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 07:10:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:10:11,277 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 23 states have internal predecessors, (70), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2023-11-29 07:10:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:12,136 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2023-11-29 07:10:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 07:10:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 23 states have internal predecessors, (70), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) Word has length 58 [2023-11-29 07:10:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:12,139 INFO L225 Difference]: With dead ends: 108 [2023-11-29 07:10:12,139 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 07:10:12,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 07:10:12,140 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:12,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 342 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 07:10:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 07:10:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83. [2023-11-29 07:10:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (33), 21 states have call predecessors, (33), 10 states have call successors, (33) [2023-11-29 07:10:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2023-11-29 07:10:12,149 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 58 [2023-11-29 07:10:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:12,149 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2023-11-29 07:10:12,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 23 states have internal predecessors, (70), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2023-11-29 07:10:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2023-11-29 07:10:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 07:10:12,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:12,150 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:12,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 07:10:12,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 07:10:12,351 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:12,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 339795120, now seen corresponding path program 8 times [2023-11-29 07:10:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:12,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103041688] [2023-11-29 07:10:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:12,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:12,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:10:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 07:10:13,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:13,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103041688] [2023-11-29 07:10:13,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103041688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:13,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227635476] [2023-11-29 07:10:13,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:10:13,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:13,192 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:13,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 07:10:13,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:10:13,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:10:13,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 07:10:13,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:10:14,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:10:18,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227635476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:18,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:18,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 23] total 50 [2023-11-29 07:10:18,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098001482] [2023-11-29 07:10:18,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:18,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 07:10:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 07:10:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2262, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 07:10:18,678 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 50 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-11-29 07:10:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:21,136 INFO L93 Difference]: Finished difference Result 158 states and 209 transitions. [2023-11-29 07:10:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 07:10:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 58 [2023-11-29 07:10:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:21,138 INFO L225 Difference]: With dead ends: 158 [2023-11-29 07:10:21,138 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 07:10:21,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=533, Invalid=4023, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 07:10:21,141 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:21,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 840 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 07:10:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 07:10:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2023-11-29 07:10:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.09375) internal successors, (70), 61 states have internal predecessors, (70), 10 states have call successors, (10), 4 states have call predecessors, (10), 17 states have return successors, (39), 26 states have call predecessors, (39), 10 states have call successors, (39) [2023-11-29 07:10:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2023-11-29 07:10:21,152 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 58 [2023-11-29 07:10:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:21,152 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2023-11-29 07:10:21,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-11-29 07:10:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2023-11-29 07:10:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 07:10:21,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:21,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:21,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 07:10:21,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 07:10:21,353 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:21,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1978024976, now seen corresponding path program 9 times [2023-11-29 07:10:21,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:21,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623825580] [2023-11-29 07:10:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:10:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 07:10:21,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623825580] [2023-11-29 07:10:21,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623825580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498397474] [2023-11-29 07:10:21,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 07:10:21,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:21,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:21,888 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:21,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 07:10:22,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 07:10:22,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:10:22,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 07:10:22,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 07:10:22,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 07:10:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498397474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:25,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:25,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 30 [2023-11-29 07:10:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329933517] [2023-11-29 07:10:25,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:25,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 07:10:25,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 07:10:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2023-11-29 07:10:25,551 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2023-11-29 07:10:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:26,534 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2023-11-29 07:10:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 07:10:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) Word has length 58 [2023-11-29 07:10:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:26,535 INFO L225 Difference]: With dead ends: 128 [2023-11-29 07:10:26,535 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 07:10:26,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 07:10:26,537 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:26,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 424 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 07:10:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 07:10:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2023-11-29 07:10:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 67 states have internal predecessors, (76), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (47), 29 states have call predecessors, (47), 10 states have call successors, (47) [2023-11-29 07:10:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2023-11-29 07:10:26,546 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 58 [2023-11-29 07:10:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:26,546 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2023-11-29 07:10:26,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2023-11-29 07:10:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2023-11-29 07:10:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 07:10:26,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:26,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:26,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 07:10:26,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:26,748 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:26,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash 179375344, now seen corresponding path program 10 times [2023-11-29 07:10:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:26,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377474576] [2023-11-29 07:10:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:27,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:10:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 07:10:27,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:27,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377474576] [2023-11-29 07:10:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377474576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:27,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127170012] [2023-11-29 07:10:27,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 07:10:27,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:27,393 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:27,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 07:10:27,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 07:10:27,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:10:27,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 07:10:27,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 07:10:28,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:10:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127170012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:33,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:33,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 22] total 46 [2023-11-29 07:10:33,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133293812] [2023-11-29 07:10:33,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:33,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 07:10:33,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 07:10:33,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 07:10:33,192 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 46 states, 42 states have (on average 2.119047619047619) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-11-29 07:10:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:35,255 INFO L93 Difference]: Finished difference Result 162 states and 211 transitions. [2023-11-29 07:10:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 07:10:35,256 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 2.119047619047619) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 58 [2023-11-29 07:10:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:35,257 INFO L225 Difference]: With dead ends: 162 [2023-11-29 07:10:35,257 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 07:10:35,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=411, Invalid=3249, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 07:10:35,260 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:35,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 762 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 07:10:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 07:10:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 98. [2023-11-29 07:10:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.088235294117647) internal successors, (74), 65 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 28 states have call predecessors, (44), 10 states have call successors, (44) [2023-11-29 07:10:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2023-11-29 07:10:35,268 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 58 [2023-11-29 07:10:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:35,268 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2023-11-29 07:10:35,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 2.119047619047619) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-11-29 07:10:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2023-11-29 07:10:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 07:10:35,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:35,269 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:35,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 07:10:35,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:35,470 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:35,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:35,470 INFO L85 PathProgramCache]: Analyzing trace with hash 319273852, now seen corresponding path program 11 times [2023-11-29 07:10:35,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285742632] [2023-11-29 07:10:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:35,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:35,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:35,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:10:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 07:10:36,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:36,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285742632] [2023-11-29 07:10:36,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285742632] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:36,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40643380] [2023-11-29 07:10:36,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 07:10:36,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:36,158 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:36,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 07:10:36,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-29 07:10:36,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:10:36,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 07:10:36,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 07:10:36,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:10:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40643380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:42,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:42,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 24] total 42 [2023-11-29 07:10:42,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342404574] [2023-11-29 07:10:42,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 07:10:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 07:10:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1582, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 07:10:42,497 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 42 states, 40 states have (on average 2.275) internal successors, (91), 32 states have internal predecessors, (91), 17 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-29 07:10:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:44,150 INFO L93 Difference]: Finished difference Result 155 states and 201 transitions. [2023-11-29 07:10:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 07:10:44,151 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.275) internal successors, (91), 32 states have internal predecessors, (91), 17 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) Word has length 66 [2023-11-29 07:10:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:44,152 INFO L225 Difference]: With dead ends: 155 [2023-11-29 07:10:44,152 INFO L226 Difference]: Without dead ends: 151 [2023-11-29 07:10:44,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=391, Invalid=2801, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 07:10:44,154 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:44,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 564 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 07:10:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-29 07:10:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 99. [2023-11-29 07:10:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 65 states have internal predecessors, (75), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 29 states have call predecessors, (44), 10 states have call successors, (44) [2023-11-29 07:10:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2023-11-29 07:10:44,162 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 66 [2023-11-29 07:10:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:44,162 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2023-11-29 07:10:44,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.275) internal successors, (91), 32 states have internal predecessors, (91), 17 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-29 07:10:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2023-11-29 07:10:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 07:10:44,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:44,163 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:44,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 07:10:44,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:44,364 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:44,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:44,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1436795420, now seen corresponding path program 12 times [2023-11-29 07:10:44,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:44,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137446840] [2023-11-29 07:10:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:44,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:10:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:10:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:45,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:10:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 07:10:45,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:45,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137446840] [2023-11-29 07:10:45,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137446840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:45,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972706520] [2023-11-29 07:10:45,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 07:10:45,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:45,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:45,131 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:45,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 07:10:45,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-29 07:10:45,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:10:45,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 07:10:45,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 07:10:46,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:13:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 3 proven. 57 refuted. 4 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:13:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972706520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:13:23,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:13:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 26] total 53 [2023-11-29 07:13:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134148750] [2023-11-29 07:13:23,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:13:23,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 07:13:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:13:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 07:13:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2519, Unknown=34, NotChecked=0, Total=2756 [2023-11-29 07:13:23,332 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 53 states, 46 states have (on average 2.108695652173913) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (20), 1 states have call predecessors, (20), 13 states have return successors, (24), 16 states have call predecessors, (24), 19 states have call successors, (24) [2023-11-29 07:13:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:13:25,805 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions. [2023-11-29 07:13:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 07:13:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 46 states have (on average 2.108695652173913) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (20), 1 states have call predecessors, (20), 13 states have return successors, (24), 16 states have call predecessors, (24), 19 states have call successors, (24) Word has length 66 [2023-11-29 07:13:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:13:25,807 INFO L225 Difference]: With dead ends: 161 [2023-11-29 07:13:25,807 INFO L226 Difference]: Without dead ends: 157 [2023-11-29 07:13:25,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 152.7s TimeCoverageRelationStatistics Valid=558, Invalid=4378, Unknown=34, NotChecked=0, Total=4970 [2023-11-29 07:13:25,809 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 65 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:13:25,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 700 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 07:13:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-29 07:13:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 98. [2023-11-29 07:13:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.088235294117647) internal successors, (74), 65 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 28 states have call predecessors, (44), 10 states have call successors, (44) [2023-11-29 07:13:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2023-11-29 07:13:25,822 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 66 [2023-11-29 07:13:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:13:25,822 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2023-11-29 07:13:25,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 46 states have (on average 2.108695652173913) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (20), 1 states have call predecessors, (20), 13 states have return successors, (24), 16 states have call predecessors, (24), 19 states have call successors, (24) [2023-11-29 07:13:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2023-11-29 07:13:25,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 07:13:25,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:13:25,823 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:13:25,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 07:13:26,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:26,024 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:13:26,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:13:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash 89654876, now seen corresponding path program 13 times [2023-11-29 07:13:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:13:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497286642] [2023-11-29 07:13:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:13:26,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:13:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:13:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 07:13:26,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:13:26,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497286642] [2023-11-29 07:13:26,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497286642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:13:26,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902230262] [2023-11-29 07:13:26,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 07:13:26,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:26,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:13:26,986 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:13:26,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 07:13:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:27,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 07:13:27,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:13:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 07:13:28,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:13:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:13:33,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902230262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:13:33,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:13:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 26] total 56 [2023-11-29 07:13:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019397309] [2023-11-29 07:13:33,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:13:33,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 07:13:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:13:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 07:13:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2867, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 07:13:33,927 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 56 states, 50 states have (on average 2.02) internal successors, (101), 43 states have internal predecessors, (101), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-29 07:13:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:13:37,093 INFO L93 Difference]: Finished difference Result 188 states and 258 transitions. [2023-11-29 07:13:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 07:13:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 50 states have (on average 2.02) internal successors, (101), 43 states have internal predecessors, (101), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) Word has length 66 [2023-11-29 07:13:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:13:37,095 INFO L225 Difference]: With dead ends: 188 [2023-11-29 07:13:37,095 INFO L226 Difference]: Without dead ends: 184 [2023-11-29 07:13:37,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=724, Invalid=5438, Unknown=0, NotChecked=0, Total=6162 [2023-11-29 07:13:37,096 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 80 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:13:37,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 817 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 07:13:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-29 07:13:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 94. [2023-11-29 07:13:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 63 states have internal predecessors, (71), 10 states have call successors, (10), 4 states have call predecessors, (10), 18 states have return successors, (41), 26 states have call predecessors, (41), 10 states have call successors, (41) [2023-11-29 07:13:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2023-11-29 07:13:37,107 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 66 [2023-11-29 07:13:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:13:37,107 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2023-11-29 07:13:37,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 50 states have (on average 2.02) internal successors, (101), 43 states have internal predecessors, (101), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-29 07:13:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2023-11-29 07:13:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 07:13:37,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:13:37,108 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:13:37,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 07:13:37,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:37,309 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:13:37,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:13:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1625118244, now seen corresponding path program 14 times [2023-11-29 07:13:37,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:13:37,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214372670] [2023-11-29 07:13:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:13:37,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:13:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:37,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:37,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:13:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:13:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:13:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214372670] [2023-11-29 07:13:38,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214372670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:13:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694555403] [2023-11-29 07:13:38,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:13:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:38,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:13:38,068 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:13:38,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 07:13:38,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:13:38,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:13:38,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 07:13:38,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:13:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 07:13:39,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:13:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:13:44,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694555403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:13:44,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:13:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 25] total 48 [2023-11-29 07:13:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176960458] [2023-11-29 07:13:44,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:13:44,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 07:13:44,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:13:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 07:13:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 07:13:44,782 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 48 states, 43 states have (on average 2.186046511627907) internal successors, (94), 35 states have internal predecessors, (94), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-29 07:13:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:13:46,576 INFO L93 Difference]: Finished difference Result 164 states and 224 transitions. [2023-11-29 07:13:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 07:13:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.186046511627907) internal successors, (94), 35 states have internal predecessors, (94), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) Word has length 66 [2023-11-29 07:13:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:13:46,578 INFO L225 Difference]: With dead ends: 164 [2023-11-29 07:13:46,578 INFO L226 Difference]: Without dead ends: 160 [2023-11-29 07:13:46,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 112 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=389, Invalid=3393, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 07:13:46,579 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 76 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:13:46,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 590 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 07:13:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-29 07:13:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 86. [2023-11-29 07:13:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 states have internal predecessors, (65), 10 states have call successors, (10), 4 states have call predecessors, (10), 16 states have return successors, (35), 22 states have call predecessors, (35), 10 states have call successors, (35) [2023-11-29 07:13:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2023-11-29 07:13:46,593 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 66 [2023-11-29 07:13:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:13:46,593 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2023-11-29 07:13:46,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.186046511627907) internal successors, (94), 35 states have internal predecessors, (94), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-29 07:13:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2023-11-29 07:13:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 07:13:46,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:13:46,595 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:13:46,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 07:13:46,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:46,800 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:13:46,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:13:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -507596676, now seen corresponding path program 15 times [2023-11-29 07:13:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:13:46,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877741950] [2023-11-29 07:13:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:13:46,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:13:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:13:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 07:13:47,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:13:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877741950] [2023-11-29 07:13:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877741950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:13:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096595607] [2023-11-29 07:13:47,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 07:13:47,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:47,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:13:47,496 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:13:47,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 07:13:47,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 07:13:47,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:13:47,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 07:13:47,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:13:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 07:13:48,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:13:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:13:55,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096595607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:13:55,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:13:55,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 25] total 51 [2023-11-29 07:13:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109764659] [2023-11-29 07:13:55,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:13:55,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 07:13:55,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:13:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 07:13:55,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2385, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 07:13:55,170 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 51 states, 48 states have (on average 2.125) internal successors, (102), 37 states have internal predecessors, (102), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-29 07:13:58,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:13:58,179 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-11-29 07:13:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 07:13:58,180 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 2.125) internal successors, (102), 37 states have internal predecessors, (102), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) Word has length 66 [2023-11-29 07:13:58,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:13:58,181 INFO L225 Difference]: With dead ends: 152 [2023-11-29 07:13:58,181 INFO L226 Difference]: Without dead ends: 148 [2023-11-29 07:13:58,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=415, Invalid=4277, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 07:13:58,182 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 50 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:13:58,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 772 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 07:13:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-29 07:13:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 84. [2023-11-29 07:13:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.103448275862069) internal successors, (64), 57 states have internal predecessors, (64), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (33), 22 states have call predecessors, (33), 10 states have call successors, (33) [2023-11-29 07:13:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2023-11-29 07:13:58,195 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 66 [2023-11-29 07:13:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:13:58,196 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2023-11-29 07:13:58,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 2.125) internal successors, (102), 37 states have internal predecessors, (102), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-29 07:13:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2023-11-29 07:13:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 07:13:58,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:13:58,197 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:13:58,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 07:13:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:58,404 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:13:58,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:13:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1341085456, now seen corresponding path program 16 times [2023-11-29 07:13:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:13:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276044730] [2023-11-29 07:13:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:13:58,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:13:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:58,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:58,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:13:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 07:13:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:59,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:13:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 27 proven. 40 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-29 07:13:59,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:13:59,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276044730] [2023-11-29 07:13:59,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276044730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:13:59,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602044999] [2023-11-29 07:13:59,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 07:13:59,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:13:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:13:59,494 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:13:59,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 07:13:59,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 07:13:59,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:13:59,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 07:13:59,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:14:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 07:14:01,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:14:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 5 proven. 87 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:14:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602044999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:14:09,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:14:09,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 29] total 58 [2023-11-29 07:14:09,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900575737] [2023-11-29 07:14:09,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:14:09,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 07:14:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:14:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 07:14:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3089, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 07:14:09,537 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 58 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 43 states have internal predecessors, (107), 19 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2023-11-29 07:14:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:14:13,183 INFO L93 Difference]: Finished difference Result 177 states and 237 transitions. [2023-11-29 07:14:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 07:14:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 43 states have internal predecessors, (107), 19 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) Word has length 74 [2023-11-29 07:14:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:14:13,185 INFO L225 Difference]: With dead ends: 177 [2023-11-29 07:14:13,185 INFO L226 Difference]: Without dead ends: 173 [2023-11-29 07:14:13,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 122 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=842, Invalid=6298, Unknown=0, NotChecked=0, Total=7140 [2023-11-29 07:14:13,186 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:14:13,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 887 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 07:14:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-29 07:14:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 62. [2023-11-29 07:14:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2023-11-29 07:14:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-11-29 07:14:13,196 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 74 [2023-11-29 07:14:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:14:13,196 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-11-29 07:14:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 43 states have internal predecessors, (107), 19 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2023-11-29 07:14:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-11-29 07:14:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 07:14:13,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:14:13,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:14:13,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 07:14:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:14:13,398 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:14:13,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:14:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1210634724, now seen corresponding path program 6 times [2023-11-29 07:14:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:14:13,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542598532] [2023-11-29 07:14:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:14:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:14:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:13,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:14:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:14:14,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:14:14,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542598532] [2023-11-29 07:14:14,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542598532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:14:14,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150983603] [2023-11-29 07:14:14,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 07:14:14,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:14:14,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:14:14,050 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:14:14,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 07:14:14,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 07:14:14,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:14:14,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 07:14:14,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:14:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:14:14,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:14:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150983603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:14:38,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:14:38,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 30 [2023-11-29 07:14:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116630661] [2023-11-29 07:14:38,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:14:38,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 07:14:38,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:14:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 07:14:38,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1350, Unknown=4, NotChecked=0, Total=1482 [2023-11-29 07:14:38,815 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 30 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 07:14:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:14:40,091 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2023-11-29 07:14:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:14:40,092 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 57 [2023-11-29 07:14:40,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:14:40,093 INFO L225 Difference]: With dead ends: 84 [2023-11-29 07:14:40,093 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 07:14:40,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=263, Invalid=2085, Unknown=4, NotChecked=0, Total=2352 [2023-11-29 07:14:40,094 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:14:40,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 345 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 07:14:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 07:14:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2023-11-29 07:14:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 9 states have call successors, (9), 4 states have call predecessors, (9), 10 states have return successors, (18), 14 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-29 07:14:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2023-11-29 07:14:40,100 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 57 [2023-11-29 07:14:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:14:40,100 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2023-11-29 07:14:40,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 07:14:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2023-11-29 07:14:40,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 07:14:40,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:14:40,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:14:40,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 07:14:40,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 07:14:40,302 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:14:40,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:14:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash -927204484, now seen corresponding path program 17 times [2023-11-29 07:14:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:14:40,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097104714] [2023-11-29 07:14:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:14:40,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:14:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:14:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:14:41,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:14:41,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097104714] [2023-11-29 07:14:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097104714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:14:41,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786257861] [2023-11-29 07:14:41,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 07:14:41,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:14:41,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:14:41,015 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:14:41,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 07:14:41,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 07:14:41,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:14:41,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 07:14:41,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:14:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:14:42,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:14:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:14:45,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786257861] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:14:45,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:14:45,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 40 [2023-11-29 07:14:45,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952196110] [2023-11-29 07:14:45,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:14:45,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 07:14:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:14:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 07:14:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 07:14:45,185 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 40 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 33 states have internal predecessors, (81), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2023-11-29 07:14:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:14:46,620 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2023-11-29 07:14:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:14:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 33 states have internal predecessors, (81), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) Word has length 57 [2023-11-29 07:14:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:14:46,621 INFO L225 Difference]: With dead ends: 88 [2023-11-29 07:14:46,621 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 07:14:46,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 96 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=274, Invalid=2176, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 07:14:46,622 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:14:46,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 434 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 07:14:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 07:14:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2023-11-29 07:14:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.127659574468085) internal successors, (53), 48 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 11 states have return successors, (20), 15 states have call predecessors, (20), 9 states have call successors, (20) [2023-11-29 07:14:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-11-29 07:14:46,627 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 57 [2023-11-29 07:14:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:14:46,627 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-11-29 07:14:46,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 33 states have internal predecessors, (81), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2023-11-29 07:14:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-11-29 07:14:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 07:14:46,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:14:46,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:14:46,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 07:14:46,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:14:46,829 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:14:46,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:14:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1057578216, now seen corresponding path program 7 times [2023-11-29 07:14:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:14:46,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202538680] [2023-11-29 07:14:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:14:46,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:14:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:14:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 07:14:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:14:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202538680] [2023-11-29 07:14:47,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202538680] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:14:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166653596] [2023-11-29 07:14:47,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 07:14:47,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:14:47,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:14:47,490 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:14:47,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 07:14:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:47,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 07:14:47,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:14:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 07:14:48,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:14:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 07:14:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166653596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:14:53,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:14:53,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 23] total 34 [2023-11-29 07:14:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112115771] [2023-11-29 07:14:53,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:14:53,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 07:14:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:14:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 07:14:53,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 07:14:53,217 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 07:14:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:14:54,673 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2023-11-29 07:14:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 07:14:54,674 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) Word has length 65 [2023-11-29 07:14:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:14:54,675 INFO L225 Difference]: With dead ends: 100 [2023-11-29 07:14:54,675 INFO L226 Difference]: Without dead ends: 96 [2023-11-29 07:14:54,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 117 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=216, Invalid=1764, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 07:14:54,676 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:14:54,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 565 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:14:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-29 07:14:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2023-11-29 07:14:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (29), 19 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-29 07:14:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2023-11-29 07:14:54,685 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 65 [2023-11-29 07:14:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:14:54,685 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2023-11-29 07:14:54,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 07:14:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2023-11-29 07:14:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 07:14:54,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:14:54,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:14:54,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 07:14:54,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 07:14:54,887 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:14:54,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:14:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 927132040, now seen corresponding path program 18 times [2023-11-29 07:14:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:14:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730337621] [2023-11-29 07:14:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:14:54,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:14:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:54,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:14:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:14:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:14:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 07:14:55,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:14:55,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730337621] [2023-11-29 07:14:55,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730337621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:14:55,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356995032] [2023-11-29 07:14:55,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 07:14:55,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:14:55,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:14:55,665 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:14:55,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 07:14:55,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 07:14:55,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:14:55,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 07:14:55,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:14:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 07:14:56,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:15:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 07:15:01,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356995032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:15:01,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:15:01,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 42 [2023-11-29 07:15:01,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110149526] [2023-11-29 07:15:01,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:15:01,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 07:15:01,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:15:01,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 07:15:01,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 07:15:01,447 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 42 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 33 states have internal predecessors, (85), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 07:15:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:15:03,041 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2023-11-29 07:15:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 07:15:03,042 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 33 states have internal predecessors, (85), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) Word has length 65 [2023-11-29 07:15:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:15:03,043 INFO L225 Difference]: With dead ends: 99 [2023-11-29 07:15:03,043 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 07:15:03,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 111 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=288, Invalid=2468, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 07:15:03,045 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:15:03,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 480 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 07:15:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 07:15:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2023-11-29 07:15:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (29), 19 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-29 07:15:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2023-11-29 07:15:03,055 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 65 [2023-11-29 07:15:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:15:03,056 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2023-11-29 07:15:03,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 33 states have internal predecessors, (85), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 07:15:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2023-11-29 07:15:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 07:15:03,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:15:03,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:15:03,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 07:15:03,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 07:15:03,258 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:15:03,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:15:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash 822154120, now seen corresponding path program 19 times [2023-11-29 07:15:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:15:03,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506919182] [2023-11-29 07:15:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:15:03,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:15:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:03,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:03,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:15:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 07:15:04,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:15:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506919182] [2023-11-29 07:15:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506919182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:15:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765229718] [2023-11-29 07:15:04,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 07:15:04,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:15:04,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:15:04,135 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:15:04,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 07:15:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:04,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 07:15:04,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:15:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:15:05,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:15:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 07:15:12,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765229718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:15:12,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:15:12,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 24] total 49 [2023-11-29 07:15:12,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381033762] [2023-11-29 07:15:12,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:15:12,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 07:15:12,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:15:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 07:15:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2176, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 07:15:12,061 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 49 states, 44 states have (on average 2.090909090909091) internal successors, (92), 38 states have internal predecessors, (92), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (24), 15 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-29 07:15:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:15:15,068 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2023-11-29 07:15:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 07:15:15,072 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.090909090909091) internal successors, (92), 38 states have internal predecessors, (92), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (24), 15 states have call predecessors, (24), 17 states have call successors, (24) Word has length 65 [2023-11-29 07:15:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:15:15,074 INFO L225 Difference]: With dead ends: 132 [2023-11-29 07:15:15,074 INFO L226 Difference]: Without dead ends: 128 [2023-11-29 07:15:15,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=457, Invalid=3833, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 07:15:15,075 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 59 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:15:15,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 782 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 07:15:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-29 07:15:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 94. [2023-11-29 07:15:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.09375) internal successors, (70), 65 states have internal predecessors, (70), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (40), 24 states have call predecessors, (40), 10 states have call successors, (40) [2023-11-29 07:15:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2023-11-29 07:15:15,083 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 65 [2023-11-29 07:15:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:15:15,083 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2023-11-29 07:15:15,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.090909090909091) internal successors, (92), 38 states have internal predecessors, (92), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (24), 15 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-29 07:15:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2023-11-29 07:15:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 07:15:15,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:15:15,084 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:15:15,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 07:15:15,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 07:15:15,285 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:15:15,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:15:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash 691707944, now seen corresponding path program 20 times [2023-11-29 07:15:15,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:15:15,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695721470] [2023-11-29 07:15:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:15:15,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:15:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:15,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:15:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 07:15:16,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:15:16,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695721470] [2023-11-29 07:15:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695721470] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:15:16,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670635544] [2023-11-29 07:15:16,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:15:16,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:15:16,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:15:16,205 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:15:16,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 07:15:16,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:15:16,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:15:16,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-29 07:15:16,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:15:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 07:15:16,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:15:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 07:15:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670635544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:15:19,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:15:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 21] total 32 [2023-11-29 07:15:19,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091987246] [2023-11-29 07:15:19,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:15:19,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 07:15:19,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:15:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 07:15:19,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:15:19,462 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 32 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-29 07:15:21,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:15:21,023 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2023-11-29 07:15:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 07:15:21,023 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) Word has length 65 [2023-11-29 07:15:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:15:21,024 INFO L225 Difference]: With dead ends: 116 [2023-11-29 07:15:21,024 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 07:15:21,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 07:15:21,025 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:15:21,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 395 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 07:15:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 07:15:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2023-11-29 07:15:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 65 states have internal predecessors, (71), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (40), 25 states have call predecessors, (40), 10 states have call successors, (40) [2023-11-29 07:15:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2023-11-29 07:15:21,036 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 65 [2023-11-29 07:15:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:15:21,036 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2023-11-29 07:15:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-29 07:15:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2023-11-29 07:15:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 07:15:21,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:15:21,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:15:21,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 07:15:21,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 07:15:21,238 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:15:21,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:15:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1296440136, now seen corresponding path program 21 times [2023-11-29 07:15:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:15:21,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5182842] [2023-11-29 07:15:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:15:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:15:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:15:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 07:15:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:15:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5182842] [2023-11-29 07:15:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5182842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:15:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022038971] [2023-11-29 07:15:22,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 07:15:22,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:15:22,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:15:22,114 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:15:22,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 07:15:22,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 07:15:22,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:15:22,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 07:15:22,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:15:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 07:15:23,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:15:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 07:15:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022038971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:15:30,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:15:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 24] total 44 [2023-11-29 07:15:30,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806900318] [2023-11-29 07:15:30,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:15:30,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 07:15:30,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:15:30,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 07:15:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1739, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 07:15:30,705 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand has 44 states, 39 states have (on average 2.282051282051282) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-29 07:15:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:15:32,920 INFO L93 Difference]: Finished difference Result 135 states and 173 transitions. [2023-11-29 07:15:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 07:15:32,921 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 2.282051282051282) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) Word has length 65 [2023-11-29 07:15:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:15:32,922 INFO L225 Difference]: With dead ends: 135 [2023-11-29 07:15:32,922 INFO L226 Difference]: Without dead ends: 131 [2023-11-29 07:15:32,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 07:15:32,923 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 71 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:15:32,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 564 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:15:32,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-29 07:15:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 98. [2023-11-29 07:15:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (43), 26 states have call predecessors, (43), 10 states have call successors, (43) [2023-11-29 07:15:32,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2023-11-29 07:15:32,935 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 65 [2023-11-29 07:15:32,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:15:32,935 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2023-11-29 07:15:32,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 2.282051282051282) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-29 07:15:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2023-11-29 07:15:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 07:15:32,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:15:32,936 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:15:32,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 07:15:33,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 07:15:33,137 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:15:33,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:15:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1061016040, now seen corresponding path program 22 times [2023-11-29 07:15:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:15:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926452417] [2023-11-29 07:15:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:15:33,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:15:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:15:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:15:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:15:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 07:15:33,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:15:33,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926452417] [2023-11-29 07:15:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926452417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:15:33,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110020733] [2023-11-29 07:15:33,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 07:15:33,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:15:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:15:33,909 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:15:33,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 07:15:34,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 07:15:34,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:15:34,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 07:15:34,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:15:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 07:15:34,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:15:55,547 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (and (forall ((v_y_313 Int) (v_gcd_~y1_BEFORE_CALL_155 Int)) (let ((.cse0 (* v_gcd_~y1_BEFORE_CALL_155 4))) (let ((.cse2 (div (+ (- 1) .cse0) 12))) (or (< (+ (* |c_gcd_#t~ret5| 4) 10) (+ (mod (+ .cse0 11) 12) (* v_y_313 12))) (< v_gcd_~y1_BEFORE_CALL_155 .cse1) (< (+ |c_gcd_#t~ret5| v_y_313) (+ .cse2 1)) (< (* v_y_313 4) .cse2))))) (forall ((v_gcd_~y1_BEFORE_CALL_155 Int)) (or (< (+ (div (+ (- 1) |c_gcd_#t~ret5|) 3) |c_gcd_#t~ret5|) (+ (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_155 4)) 12) 1)) (< v_gcd_~y1_BEFORE_CALL_155 .cse1))) (forall ((v_gcd_~y1_BEFORE_CALL_155 Int)) (or (< v_gcd_~y1_BEFORE_CALL_155 .cse1) (< (* (div |c_gcd_#t~ret5| 3) 4) (+ (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_155 4)) 12) 2)))))) is different from false [2023-11-29 07:16:33,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110020733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:16:33,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:16:33,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2023-11-29 07:16:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962375763] [2023-11-29 07:16:33,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:16:33,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 07:16:33,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:16:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 07:16:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=953, Unknown=11, NotChecked=62, Total=1122 [2023-11-29 07:16:33,774 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand has 26 states, 25 states have (on average 2.12) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 07:16:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:16:35,145 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2023-11-29 07:16:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 07:16:35,146 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) Word has length 65 [2023-11-29 07:16:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:16:35,147 INFO L225 Difference]: With dead ends: 126 [2023-11-29 07:16:35,147 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 07:16:35,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 55.9s TimeCoverageRelationStatistics Valid=201, Invalid=1684, Unknown=11, NotChecked=84, Total=1980 [2023-11-29 07:16:35,148 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:16:35,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 467 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 07:16:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 07:16:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2023-11-29 07:16:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 69 states have internal predecessors, (76), 10 states have call successors, (10), 4 states have call predecessors, (10), 21 states have return successors, (45), 28 states have call predecessors, (45), 10 states have call successors, (45) [2023-11-29 07:16:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2023-11-29 07:16:35,155 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 65 [2023-11-29 07:16:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:16:35,156 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2023-11-29 07:16:35,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 07:16:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2023-11-29 07:16:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 07:16:35,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:16:35,157 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:16:35,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 07:16:35,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:35,357 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:16:35,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:16:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash -926745700, now seen corresponding path program 8 times [2023-11-29 07:16:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:16:35,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220907973] [2023-11-29 07:16:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:16:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:35,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:16:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 07:16:36,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:16:36,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220907973] [2023-11-29 07:16:36,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220907973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:16:36,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853904563] [2023-11-29 07:16:36,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:16:36,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:36,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:16:36,267 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:16:36,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 07:16:36,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:16:36,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:16:36,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 07:16:36,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:16:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 46 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 07:16:37,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:16:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 4 proven. 84 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 07:16:44,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853904563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:16:44,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:16:44,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 27] total 45 [2023-11-29 07:16:44,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325742943] [2023-11-29 07:16:44,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:16:44,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 07:16:44,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:16:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 07:16:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1838, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 07:16:44,922 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand has 45 states, 42 states have (on average 2.238095238095238) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-29 07:16:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:16:47,146 INFO L93 Difference]: Finished difference Result 144 states and 190 transitions. [2023-11-29 07:16:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 07:16:47,147 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.238095238095238) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) Word has length 73 [2023-11-29 07:16:47,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:16:47,148 INFO L225 Difference]: With dead ends: 144 [2023-11-29 07:16:47,148 INFO L226 Difference]: Without dead ends: 140 [2023-11-29 07:16:47,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=373, Invalid=3049, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 07:16:47,150 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:16:47,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 666 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:16:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-29 07:16:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2023-11-29 07:16:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 65 states have internal predecessors, (72), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (39), 26 states have call predecessors, (39), 10 states have call successors, (39) [2023-11-29 07:16:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2023-11-29 07:16:47,160 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 73 [2023-11-29 07:16:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:16:47,161 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2023-11-29 07:16:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.238095238095238) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-29 07:16:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2023-11-29 07:16:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 07:16:47,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:16:47,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:16:47,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 07:16:47,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:47,363 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:16:47,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:16:47,363 INFO L85 PathProgramCache]: Analyzing trace with hash 869545788, now seen corresponding path program 23 times [2023-11-29 07:16:47,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:16:47,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768425683] [2023-11-29 07:16:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:47,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:16:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:16:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-29 07:16:48,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:16:48,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768425683] [2023-11-29 07:16:48,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768425683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:16:48,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797546878] [2023-11-29 07:16:48,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 07:16:48,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:16:48,160 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:16:48,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 07:16:48,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-29 07:16:48,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:16:48,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 07:16:48,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:16:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 07:16:49,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:16:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 07:16:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797546878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:16:55,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:16:55,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 24] total 35 [2023-11-29 07:16:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238535105] [2023-11-29 07:16:55,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:16:55,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 07:16:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:16:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 07:16:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 07:16:55,925 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 28 states have internal predecessors, (83), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-29 07:16:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:16:57,420 INFO L93 Difference]: Finished difference Result 130 states and 164 transitions. [2023-11-29 07:16:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 07:16:57,421 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 28 states have internal predecessors, (83), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) Word has length 73 [2023-11-29 07:16:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:16:57,422 INFO L225 Difference]: With dead ends: 130 [2023-11-29 07:16:57,422 INFO L226 Difference]: Without dead ends: 126 [2023-11-29 07:16:57,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 133 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 07:16:57,423 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 73 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:16:57,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 497 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:16:57,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-29 07:16:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2023-11-29 07:16:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 69 states have internal predecessors, (78), 10 states have call successors, (10), 4 states have call predecessors, (10), 21 states have return successors, (45), 30 states have call predecessors, (45), 10 states have call successors, (45) [2023-11-29 07:16:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 133 transitions. [2023-11-29 07:16:57,433 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 133 transitions. Word has length 73 [2023-11-29 07:16:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:16:57,433 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 133 transitions. [2023-11-29 07:16:57,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 28 states have internal predecessors, (83), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-29 07:16:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 133 transitions. [2023-11-29 07:16:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 07:16:57,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:16:57,435 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:16:57,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 07:16:57,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:57,635 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:16:57,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:16:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash 58978396, now seen corresponding path program 24 times [2023-11-29 07:16:57,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:16:57,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623964872] [2023-11-29 07:16:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:57,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:16:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:16:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:58,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:16:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:58,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:16:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:16:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:16:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623964872] [2023-11-29 07:16:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623964872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:16:58,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527534206] [2023-11-29 07:16:58,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 07:16:58,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:58,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:16:58,557 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:16:58,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 07:16:58,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-29 07:16:58,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:16:58,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 07:16:58,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:17:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:17:00,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:17:28,335 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-11-29 07:17:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 2 proven. 74 refuted. 0 times theorem prover too weak. 16 trivial. 4 not checked. [2023-11-29 07:17:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527534206] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:17:30,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:17:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 29] total 57 [2023-11-29 07:17:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737569255] [2023-11-29 07:17:30,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:17:30,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 07:17:30,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:17:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 07:17:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2882, Unknown=1, NotChecked=108, Total=3192 [2023-11-29 07:17:30,545 INFO L87 Difference]: Start difference. First operand 104 states and 133 transitions. Second operand has 57 states, 50 states have (on average 2.12) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) [2023-11-29 07:17:36,105 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (<= c_gcd_~y2 |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (= c_gcd_~y2 |c_gcd_#in~y2|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (<= (+ (* |c_gcd_#res| 4) 1) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (<= (+ c_gcd_~y2 1) |c_gcd_#in~y1|) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (= |c_gcd_#in~y1| c_gcd_~y1) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= 1 c_gcd_~y2) (<= (+ .cse24 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (<= 1 c_gcd_~y1) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-11-29 07:17:40,650 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (<= (+ (* |c_gcd_#res| 4) 1) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= (+ .cse24 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-11-29 07:17:44,682 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse15 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse20 (+ |c_gcd_#in~y2| 1)) (.cse18 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse12 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (<= (+ .cse12 3) |c_gcd_#in~y2|) (<= (+ (* |c_gcd_#res| 4) 1) |c_gcd_#in~y2|) (forall ((v_y_361 Int)) (let ((.cse14 (* 3 v_y_361))) (let ((.cse13 (mod (+ .cse14 4) 6))) (or (< (+ .cse13 (* 6 (div (+ .cse14 (- 2)) 6)) .cse3) (+ .cse14 .cse15 10)) (< (+ .cse13 .cse3) (+ 7 .cse8)) (< .cse13 4))))) (forall ((v_y_361 Int)) (let ((.cse17 (* 3 v_y_361))) (let ((.cse16 (mod (+ .cse17 4) 6))) (or (< .cse16 4) (< (+ .cse16 (* 6 (div (+ .cse17 (- 2)) 6)) .cse3) (+ .cse17 .cse15 8)) (< (+ .cse16 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse19 (* 3 v_y_506))) (or (< (+ .cse18 (mod (+ 4 .cse19) 6)) (+ 5 (* 6 v_y_504) .cse19)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse19) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse20)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse23 (* 3 v_y_506))) (let ((.cse21 (mod (+ 4 .cse23) 6)) (.cse22 (* 6 v_y_548))) (or (< .cse21 (+ .cse22 2)) (< (+ 5 .cse22) .cse21) (< (+ (* 6 (div (+ (- 2) .cse23) 6)) .cse18 .cse21 1) (+ .cse22 .cse5 .cse23)))))) (forall ((v_y_506 Int)) (let ((.cse24 (* 3 v_y_506))) (or (< (mod (+ 4 .cse24) 6) 4) (< (+ .cse12 (* 2 (div (+ (- 2) .cse24) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse18 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse18 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse18 .cse28 1) (+ .cse5 .cse29)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse20)))) (<= .cse12 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse12 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= (+ .cse12 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse18 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse12 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (or (< .cse12 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-11-29 07:17:49,185 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse13 (div |c_gcd_#in~y2| 2))) (let ((.cse4 (* 3 |c_gcd_#res|)) (.cse20 (* 6 |c_gcd_#res|)) (.cse11 (* 3 .cse13))) (let ((.cse2 (< |c_gcd_#res| (+ .cse13 1))) (.cse17 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse7 (+ .cse11 8)) (.cse8 (+ .cse20 2)) (.cse0 (+ 5 .cse4)) (.cse9 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|)) (.cse22 (+ |c_gcd_#in~y2| 1)) (.cse6 (* 6 .cse13)) (.cse1 (* 2 .cse13)) (.cse27 (* 2 |c_gcd_#res|))) (and (<= .cse0 |c_gcd_#in~y1|) (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse1))) .cse2) (or (forall ((v_y_407 Int)) (let ((.cse3 (* 3 v_y_407))) (let ((.cse5 (mod (+ .cse3 4) 6))) (or (< (+ (* (div (+ .cse3 (- 2)) 6) 6) .cse4 .cse5 4) (+ .cse3 .cse6)) (< (+ .cse4 .cse5) .cse7) (< .cse5 4))))) .cse2) (<= .cse8 .cse9) (or (forall ((v_y_407 Int)) (let ((.cse12 (* 3 v_y_407))) (let ((.cse10 (mod (+ .cse12 4) 6))) (or (< (+ .cse4 .cse10) (+ .cse11 5)) (< .cse10 4) (< (+ 2 (* 2 (div (+ .cse12 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse1)))))) (< |c_gcd_#res| .cse13)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse14 (* 3 v_y_407))) (or (< (mod (+ .cse14 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse14 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse1))))) .cse2) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse4) (+ .cse16 .cse17 10)) (< (+ .cse15 .cse4) (+ 7 .cse11)) (< .cse15 4))))) (forall ((v_y_361 Int)) (let ((.cse19 (* 3 v_y_361))) (let ((.cse18 (mod (+ .cse19 4) 6))) (or (< .cse18 4) (< (+ .cse18 (* 6 (div (+ .cse19 (- 2)) 6)) .cse4) (+ .cse19 .cse17 8)) (< (+ .cse18 .cse4) .cse7))))) (<= .cse8 |c_gcd_#in~y1|) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse21 (* 3 v_y_506))) (or (< (+ .cse20 (mod (+ 4 .cse21) 6)) (+ 5 (* 6 v_y_504) .cse21)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse21) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse22)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse25 (* 3 v_y_506))) (let ((.cse23 (mod (+ 4 .cse25) 6)) (.cse24 (* 6 v_y_548))) (or (< .cse23 (+ .cse24 2)) (< (+ 5 .cse24) .cse23) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse20 .cse23 1) (+ .cse24 .cse6 .cse25)))))) (forall ((v_y_506 Int)) (let ((.cse26 (* 3 v_y_506))) (or (< (mod (+ 4 .cse26) 6) 4) (< (+ .cse27 (* 2 (div (+ (- 2) .cse26) 6)) 1) (+ v_y_506 .cse1))))) (forall ((v_y_506 Int)) (let ((.cse28 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse28) 6)) .cse20 (mod (+ 4 .cse28) 6) 1) (+ .cse6 .cse28)))) (<= .cse0 .cse9) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse30 (mod (+ 4 .cse29) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse20 .cse30 1) (+ .cse6 .cse29)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse30) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse20 .cse31 1) (+ .cse6 .cse32)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse33 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse33 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse4 (mod (+ .cse33 4) 6)) (+ .cse33 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse22)))) (<= .cse27 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse27 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse1 1))) (<= (+ .cse27 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse35 (* 3 v_y_506))) (let ((.cse34 (mod (+ 4 .cse35) 6))) (or (< .cse34 4) (< (+ (* 6 (div (+ (- 2) .cse35) 6)) .cse20 .cse34) (+ .cse6 .cse35 1)))))) (forall ((v_y_506 Int)) (< (+ .cse27 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse1))) (or (< .cse27 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-11-29 07:17:53,815 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (<= c_gcd_~y2 |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (= c_gcd_~y2 |c_gcd_#in~y2|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (<= (+ c_gcd_~y2 1) |c_gcd_#in~y1|) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (= |c_gcd_#in~y1| c_gcd_~y1) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= 1 c_gcd_~y2) (<= (+ .cse24 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (<= 1 c_gcd_~y1) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-11-29 07:17:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:17:54,436 INFO L93 Difference]: Finished difference Result 200 states and 269 transitions. [2023-11-29 07:17:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 07:17:54,437 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 50 states have (on average 2.12) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) Word has length 73 [2023-11-29 07:17:54,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:17:54,438 INFO L225 Difference]: With dead ends: 200 [2023-11-29 07:17:54,438 INFO L226 Difference]: Without dead ends: 196 [2023-11-29 07:17:54,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=594, Invalid=5744, Unknown=6, NotChecked=966, Total=7310 [2023-11-29 07:17:54,440 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 48 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 862 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:17:54,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1047 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1267 Invalid, 0 Unknown, 862 Unchecked, 1.8s Time] [2023-11-29 07:17:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-29 07:17:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 95. [2023-11-29 07:17:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 65 states have internal predecessors, (71), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (39), 25 states have call predecessors, (39), 10 states have call successors, (39) [2023-11-29 07:17:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 120 transitions. [2023-11-29 07:17:54,452 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 120 transitions. Word has length 73 [2023-11-29 07:17:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:17:54,453 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 120 transitions. [2023-11-29 07:17:54,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 50 states have (on average 2.12) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) [2023-11-29 07:17:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 120 transitions. [2023-11-29 07:17:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 07:17:54,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:17:54,454 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:17:54,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 07:17:54,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 07:17:54,654 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:17:54,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:17:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1031896220, now seen corresponding path program 25 times [2023-11-29 07:17:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:17:54,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076484600] [2023-11-29 07:17:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:17:54,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:17:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:17:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:54,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:17:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:17:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:17:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:17:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:17:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:17:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:17:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:17:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 07:17:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:17:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076484600] [2023-11-29 07:17:55,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076484600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:17:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263231208] [2023-11-29 07:17:55,687 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 07:17:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:17:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:17:55,688 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:17:55,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 07:17:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 07:17:56,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:17:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 07:17:57,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:18:09,612 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 8)) 3)) (.cse0 (* 3 |c_gcd_#res|)) (.cse9 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 5)) 3)) (.cse3 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (let ((.cse12 (div .cse3 5)) (.cse2 (* 3 .cse9)) (.cse4 (+ .cse0 1)) (.cse5 (+ (* 3 .cse8) 1))) (and (forall ((v_y_623 Int)) (let ((.cse1 (* 5 v_y_623))) (or (< (+ .cse0 (* (div (+ (- 2) .cse1) 3) 3)) (+ .cse2 .cse1 2)) (< (+ .cse1 4) .cse3) (< .cse4 .cse1)))) (<= (* 5 |c_gcd_#res|) .cse3) (forall ((v_y_614 Int) (v_z_614 Int)) (or (< v_z_614 0) (< (+ (* v_y_614 15) v_z_614 (* 3 (div (+ (- 2) (* v_z_614 10)) 3))) .cse5) (< 2 v_z_614) (< |c_gcd_#res| (+ (* 3 v_y_614) (* 2 v_z_614) 1)) (< (+ (* 6 v_z_614) 4 (* 9 v_y_614)) .cse3) (= 2 v_z_614))) (forall ((v_y_625 Int) (v_z_625 Int)) (let ((.cse6 (* 3 v_z_625)) (.cse7 (* v_z_625 10))) (or (< v_z_625 0) (< 2 v_z_625) (< |c_gcd_#res| (+ .cse6 (* 5 v_y_625) 1)) (= 2 v_z_625) (< (+ (div (+ (- 2) .cse7) 3) |c_gcd_#res|) (+ .cse6 2 .cse8)) (< (+ .cse7 (* v_y_625 15) 4) .cse3)))) (forall ((v_y_610 Int)) (or (< (div (+ (- 2) (* 5 v_y_610)) 3) .cse9) (< |c_gcd_#res| (+ v_y_610 1)) (< (+ (* 3 v_y_610) 4) .cse3))) (forall ((v_y_603 Int) (v_z_603 Int)) (let ((.cse10 (* v_z_603 10)) (.cse11 (* v_y_603 15))) (or (< (+ 5 (* 3 (div (+ (- 2) .cse10) 3)) v_z_603 .cse11) (* .cse12 3)) (< (+ .cse10 .cse11 4) .cse3) (< v_z_603 0) (< |c_gcd_#res| (+ (* 3 v_y_603) (* 2 v_z_603) 1)) (= 2 v_z_603) (< 2 v_z_603)))) (forall ((v_y_600 Int)) (let ((.cse13 (* 5 v_y_600))) (or (< |c_gcd_#res| (+ v_y_600 1)) (< (+ 4 .cse13) .cse3) (< (+ (div (+ (- 2) .cse13) 3) 1) .cse12)))) (forall ((v_y_615 Int)) (let ((.cse15 (* 5 v_y_615))) (let ((.cse14 (div (+ (- 2) .cse15) 3))) (or (< (+ (* 3 .cse14) .cse0) (+ .cse15 .cse2 2)) (< .cse14 .cse9) (< .cse4 .cse15))))) (forall ((v_z_620 Int) (v_y_620 Int)) (let ((.cse16 (* 3 v_z_620)) (.cse17 (div (+ (- 2) (* v_z_620 10)) 3))) (or (< |c_gcd_#res| (+ .cse16 (* 5 v_y_620) 1)) (< (+ |c_gcd_#res| .cse17) (+ .cse16 2 .cse8)) (= 2 v_z_620) (< 2 v_z_620) (< v_z_620 0) (< (+ v_z_620 (* 3 .cse17) (* v_y_620 15)) .cse5))))))) is different from false [2023-11-29 07:21:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263231208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:21:51,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:21:51,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 36 [2023-11-29 07:21:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601779976] [2023-11-29 07:21:51,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:21:51,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 07:21:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:21:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 07:21:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2141, Unknown=44, NotChecked=94, Total=2450 [2023-11-29 07:21:51,992 INFO L87 Difference]: Start difference. First operand 95 states and 120 transitions. Second operand has 36 states, 32 states have (on average 2.0) internal successors, (64), 26 states have internal predecessors, (64), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-29 07:21:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:21:55,286 INFO L93 Difference]: Finished difference Result 164 states and 217 transitions. [2023-11-29 07:21:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 07:21:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 2.0) internal successors, (64), 26 states have internal predecessors, (64), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) Word has length 73 [2023-11-29 07:21:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:21:55,288 INFO L225 Difference]: With dead ends: 164 [2023-11-29 07:21:55,288 INFO L226 Difference]: Without dead ends: 160 [2023-11-29 07:21:55,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 228.8s TimeCoverageRelationStatistics Valid=469, Invalid=4047, Unknown=44, NotChecked=132, Total=4692 [2023-11-29 07:21:55,289 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:21:55,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 717 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 07:21:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-29 07:21:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114. [2023-11-29 07:21:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 75 states have internal predecessors, (85), 10 states have call successors, (10), 4 states have call predecessors, (10), 24 states have return successors, (53), 34 states have call predecessors, (53), 10 states have call successors, (53) [2023-11-29 07:21:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2023-11-29 07:21:55,299 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 73 [2023-11-29 07:21:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:21:55,299 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2023-11-29 07:21:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 2.0) internal successors, (64), 26 states have internal predecessors, (64), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-29 07:21:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2023-11-29 07:21:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 07:21:55,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:21:55,300 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:21:55,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 07:21:55,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 07:21:55,501 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:21:55,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:21:55,501 INFO L85 PathProgramCache]: Analyzing trace with hash 44195036, now seen corresponding path program 26 times [2023-11-29 07:21:55,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:21:55,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988490689] [2023-11-29 07:21:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:21:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:21:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:21:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:55,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:21:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:21:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:21:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 07:21:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:21:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:21:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:21:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 07:21:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:21:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-29 07:21:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:21:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988490689] [2023-11-29 07:21:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988490689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:21:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109311288] [2023-11-29 07:21:56,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:21:56,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:21:56,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:21:56,345 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:21:56,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad82683e-5008-4643-bc3d-790614cafc3f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 07:21:56,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:21:56,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:21:56,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 07:21:56,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:21:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-29 07:21:58,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:22:10,935 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|)) (.cse3 (* 3 |c_gcd_#res|)) (.cse1 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 5)) 3))) (let ((.cse4 (* 3 .cse1)) (.cse6 (+ .cse3 1)) (.cse11 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 8)) 3)) (.cse15 (div .cse0 5))) (and (<= (* 5 |c_gcd_#res|) .cse0) (forall ((v_y_651 Int)) (or (< |c_gcd_#res| (+ v_y_651 1)) (< (+ (* 3 v_y_651) 4) .cse0) (< (div (+ (- 2) (* 5 v_y_651)) 3) .cse1))) (forall ((v_y_646 Int)) (let ((.cse5 (* 5 v_y_646))) (let ((.cse2 (div (+ (- 2) .cse5) 3))) (or (< (+ (* 3 .cse2) .cse3) (+ .cse4 2 .cse5)) (< .cse2 .cse1) (< .cse6 .cse5) (< (+ (* 3 v_y_646) 4) .cse0))))) (forall ((v_y_636 Int)) (let ((.cse8 (* 5 v_y_636))) (let ((.cse7 (div (+ (- 2) .cse8) 3))) (or (< .cse7 .cse1) (< (+ .cse8 4) .cse0) (< .cse6 .cse8) (< (+ (* 3 .cse7) .cse3) (+ .cse4 2 .cse8)))))) (forall ((v_z_650 Int) (v_y_650 Int)) (let ((.cse9 (* v_z_650 10))) (let ((.cse10 (div (+ (- 2) .cse9) 3))) (or (< (+ (* 6 v_z_650) 4 (* 9 v_y_650)) .cse0) (= 2 v_z_650) (< .cse6 (+ (* v_y_650 15) .cse9)) (< (+ (* 5 v_y_650) .cse10) .cse11) (< v_z_650 0) (< (+ .cse10 |c_gcd_#res|) (+ 2 (* 3 v_z_650) .cse11)) (< 2 v_z_650))))) (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse12 (* v_y_639 15)) (.cse13 (* v_z_639 10))) (or (< (+ .cse12 4 .cse13) .cse0) (< .cse6 (+ .cse12 .cse13)) (= 2 v_z_639) (< v_z_639 0) (< (+ (div (+ (- 2) .cse13) 3) |c_gcd_#res|) (+ (* 3 v_z_639) 2 .cse11)) (< 2 v_z_639)))) (forall ((v_y_640 Int)) (let ((.cse14 (* 5 v_y_640))) (or (< (+ .cse14 4) .cse0) (< .cse6 .cse14) (< (+ .cse3 (* (div (+ (- 2) .cse14) 3) 3) 1) (+ .cse14 (* .cse15 3)))))) (forall ((v_z_654 Int) (v_y_654 Int)) (or (< |c_gcd_#res| (+ (* 2 v_z_654) (* 3 v_y_654) 1)) (< (+ (* 6 v_z_654) (* 9 v_y_654) 4) .cse0) (< v_z_654 0) (= 2 v_z_654) (< 2 v_z_654) (< (+ (* 5 v_y_654) (div (+ (- 2) (* v_z_654 10)) 3)) .cse11))) (or (and (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse16 (* v_y_639 15)) (.cse17 (* v_z_639 10))) (or (< (+ .cse16 4 .cse17) .cse0) (< .cse6 (+ .cse16 .cse17)) (< v_z_639 0) (< 2 v_z_639)))) (<= (+ (* (div (+ (- 7) |c_gcd_#res|) 5) 15) 25) .cse0)) (< |c_gcd_#res| (+ 3 .cse11))) (forall ((v_z_644 Int) (v_y_644 Int)) (let ((.cse18 (* v_z_644 10)) (.cse19 (* 3 v_z_644))) (or (< (+ .cse18 (* v_y_644 15) 4) .cse0) (= 2 v_z_644) (< v_z_644 0) (< (+ (div (+ .cse18 (- 2)) 3) |c_gcd_#res|) (+ .cse15 .cse19)) (< |c_gcd_#res| (+ (* 5 v_y_644) .cse19 1)) (< 2 v_z_644))))))) is different from false [2023-11-29 07:22:15,370 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (* 3 |c_gcd_#res|)) (.cse1 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 5)) 3))) (let ((.cse6 (* 3 .cse1)) (.cse4 (+ .cse5 1)) (.cse0 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|)) (.cse11 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 8)) 3))) (and (<= (* 5 |c_gcd_#res|) .cse0) (forall ((v_y_651 Int)) (or (< |c_gcd_#res| (+ v_y_651 1)) (< (+ (* 3 v_y_651) 4) .cse0) (< (div (+ (- 2) (* 5 v_y_651)) 3) .cse1))) (forall ((v_y_636 Int)) (let ((.cse3 (* 5 v_y_636))) (let ((.cse2 (div (+ (- 2) .cse3) 3))) (or (< .cse2 .cse1) (< (+ .cse3 4) .cse0) (< .cse4 .cse3) (< (+ (* 3 .cse2) .cse5) (+ .cse6 2 .cse3)))))) (forall ((v_y_646 Int)) (let ((.cse8 (* 5 v_y_646))) (let ((.cse7 (div (+ (- 2) .cse8) 3))) (or (< (+ (* 3 .cse7) .cse5) (+ .cse6 2 .cse8)) (< .cse7 .cse1) (< .cse4 .cse8))))) (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse9 (* v_y_639 15)) (.cse10 (* v_z_639 10))) (or (< (+ .cse9 4 .cse10) .cse0) (< .cse4 (+ .cse9 .cse10)) (= 2 v_z_639) (< v_z_639 0) (< (+ (div (+ (- 2) .cse10) 3) |c_gcd_#res|) (+ (* 3 v_z_639) 2 .cse11)) (< 2 v_z_639)))) (forall ((v_z_654 Int) (v_y_654 Int)) (or (< |c_gcd_#res| (+ (* 2 v_z_654) (* 3 v_y_654) 1)) (< (+ (* 6 v_z_654) (* 9 v_y_654) 4) .cse0) (< v_z_654 0) (= 2 v_z_654) (< 2 v_z_654) (< (+ (* 5 v_y_654) (div (+ (- 2) (* v_z_654 10)) 3)) .cse11))) (forall ((v_z_650 Int) (v_y_650 Int)) (let ((.cse12 (* v_z_650 10))) (let ((.cse13 (div (+ (- 2) .cse12) 3))) (or (= 2 v_z_650) (< .cse4 (+ (* v_y_650 15) .cse12)) (< (+ (* 5 v_y_650) .cse13) .cse11) (< v_z_650 0) (< (+ .cse13 |c_gcd_#res|) (+ 2 (* 3 v_z_650) .cse11)) (< 2 v_z_650))))) (or (and (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse14 (* v_y_639 15)) (.cse15 (* v_z_639 10))) (or (< (+ .cse14 4 .cse15) .cse0) (< .cse4 (+ .cse14 .cse15)) (< v_z_639 0) (< 2 v_z_639)))) (<= (+ (* (div (+ (- 7) |c_gcd_#res|) 5) 15) 25) .cse0)) (< |c_gcd_#res| (+ 3 .cse11)))))) is different from false