./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX --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 64bit --witnessprinter.graph.data.programhash 10c341169e851beaa907d6b4c856b8c9335bdf02c819f534595f4ceb4010e354 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:20:54,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:20:54,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 17:20:54,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:20:54,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:20:54,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:20:54,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:20:54,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:20:54,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:20:54,249 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:20:54,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:20:54,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:20:54,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:20:54,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:20:54,251 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:20:54,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:20:54,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:20:54,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:20:54,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:20:54,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:20:54,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:20:54,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:20:54,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:20:54,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:20:54,257 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:20:54,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:20:54,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:20:54,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:20:54,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:20:54,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:20:54,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:20:54,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:20:54,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:20:54,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:20:54,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:20:54,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:20:54,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:20:54,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:20:54,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:20:54,265 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_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10c341169e851beaa907d6b4c856b8c9335bdf02c819f534595f4ceb4010e354 [2024-11-08 17:20:54,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:20:54,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:20:54,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:20:54,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:20:54,613 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:20:54,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c Unable to find full path for "g++" [2024-11-08 17:20:56,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:20:56,857 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:20:56,858 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2024-11-08 17:20:56,877 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/data/f98e31be8/22faee3853a44c53a7244e31703e1c73/FLAGe4d9a37ad [2024-11-08 17:20:57,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/data/f98e31be8/22faee3853a44c53a7244e31703e1c73 [2024-11-08 17:20:57,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:20:57,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:20:57,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:20:57,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:20:57,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:20:57,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244daaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57, skipping insertion in model container [2024-11-08 17:20:57,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,246 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:20:57,463 WARN L250 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_bc9a75b6-054c-43f3-a391-cb11e5866a8d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1266,1279] [2024-11-08 17:20:57,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:20:57,633 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:20:57,645 WARN L250 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_bc9a75b6-054c-43f3-a391-cb11e5866a8d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1266,1279] [2024-11-08 17:20:57,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:20:57,753 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:20:57,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57 WrapperNode [2024-11-08 17:20:57,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:20:57,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:20:57,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:20:57,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:20:57,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,905 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 749 [2024-11-08 17:20:57,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:20:57,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:20:57,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:20:57,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:20:57,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,983 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 17:20:57,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:57,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:58,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:58,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:58,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:58,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:58,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:20:58,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:20:58,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:20:58,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:20:58,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (1/1) ... [2024-11-08 17:20:58,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:20:58,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:58,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:20:58,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:20:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:20:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:20:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:20:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:20:58,419 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:20:58,421 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:20:59,435 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2024-11-08 17:20:59,435 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:20:59,454 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:20:59,454 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 17:20:59,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:59 BoogieIcfgContainer [2024-11-08 17:20:59,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:20:59,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:20:59,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:20:59,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:20:59,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:20:57" (1/3) ... [2024-11-08 17:20:59,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f2f78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:59, skipping insertion in model container [2024-11-08 17:20:59,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:20:57" (2/3) ... [2024-11-08 17:20:59,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f2f78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:20:59, skipping insertion in model container [2024-11-08 17:20:59,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:20:59" (3/3) ... [2024-11-08 17:20:59,466 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2024-11-08 17:20:59,487 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:20:59,487 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:20:59,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:20:59,572 INFO L333 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, 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;@1b4b26da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:20:59,572 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:20:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.49645390070922) internal successors, (211), 142 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 17:20:59,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:20:59,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:59,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:20:59,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash -538517118, now seen corresponding path program 1 times [2024-11-08 17:20:59,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:59,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246486984] [2024-11-08 17:20:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:59,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:00,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:00,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246486984] [2024-11-08 17:21:00,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246486984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:00,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:00,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:21:00,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550628200] [2024-11-08 17:21:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:00,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:21:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:21:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:21:00,440 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.49645390070922) internal successors, (211), 142 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:00,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:00,519 INFO L93 Difference]: Finished difference Result 230 states and 342 transitions. [2024-11-08 17:21:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:21:00,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 17:21:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:00,532 INFO L225 Difference]: With dead ends: 230 [2024-11-08 17:21:00,533 INFO L226 Difference]: Without dead ends: 141 [2024-11-08 17:21:00,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:21:00,542 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:00,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:21:00,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-08 17:21:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-08 17:21:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 140 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2024-11-08 17:21:00,597 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 41 [2024-11-08 17:21:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:00,601 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2024-11-08 17:21:00,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2024-11-08 17:21:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 17:21:00,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:00,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:00,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:21:00,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:00,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:00,605 INFO L85 PathProgramCache]: Analyzing trace with hash 487533917, now seen corresponding path program 1 times [2024-11-08 17:21:00,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:00,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343466575] [2024-11-08 17:21:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:00,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343466575] [2024-11-08 17:21:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343466575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:00,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:00,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:21:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760165641] [2024-11-08 17:21:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:00,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:21:00,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:00,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:21:00,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:21:00,888 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:00,934 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2024-11-08 17:21:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:21:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-08 17:21:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:00,936 INFO L225 Difference]: With dead ends: 230 [2024-11-08 17:21:00,936 INFO L226 Difference]: Without dead ends: 143 [2024-11-08 17:21:00,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:21:00,938 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:00,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:21:00,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-08 17:21:00,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-08 17:21:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.471830985915493) internal successors, (209), 142 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 209 transitions. [2024-11-08 17:21:00,948 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 209 transitions. Word has length 42 [2024-11-08 17:21:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:00,948 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 209 transitions. [2024-11-08 17:21:00,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 209 transitions. [2024-11-08 17:21:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 17:21:00,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:00,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:00,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:21:00,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:00,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1130683835, now seen corresponding path program 1 times [2024-11-08 17:21:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:00,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395020589] [2024-11-08 17:21:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395020589] [2024-11-08 17:21:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395020589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:01,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:01,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:21:01,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292803536] [2024-11-08 17:21:01,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:01,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:21:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:21:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:21:01,453 INFO L87 Difference]: Start difference. First operand 143 states and 209 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:01,522 INFO L93 Difference]: Finished difference Result 232 states and 338 transitions. [2024-11-08 17:21:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:21:01,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-08 17:21:01,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:01,524 INFO L225 Difference]: With dead ends: 232 [2024-11-08 17:21:01,524 INFO L226 Difference]: Without dead ends: 143 [2024-11-08 17:21:01,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:21:01,528 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 6 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:01,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 587 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:21:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-08 17:21:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-08 17:21:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4647887323943662) internal successors, (208), 142 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 208 transitions. [2024-11-08 17:21:01,542 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 208 transitions. Word has length 43 [2024-11-08 17:21:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:01,543 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 208 transitions. [2024-11-08 17:21:01,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 208 transitions. [2024-11-08 17:21:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 17:21:01,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:01,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:01,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:21:01,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:01,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1600347556, now seen corresponding path program 1 times [2024-11-08 17:21:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:01,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654255907] [2024-11-08 17:21:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:02,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654255907] [2024-11-08 17:21:02,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654255907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:02,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:02,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:21:02,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876080227] [2024-11-08 17:21:02,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:02,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:21:02,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:21:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:21:02,145 INFO L87 Difference]: Start difference. First operand 143 states and 208 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:02,307 INFO L93 Difference]: Finished difference Result 242 states and 350 transitions. [2024-11-08 17:21:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:21:02,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-08 17:21:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:02,311 INFO L225 Difference]: With dead ends: 242 [2024-11-08 17:21:02,311 INFO L226 Difference]: Without dead ends: 153 [2024-11-08 17:21:02,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:21:02,315 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 192 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:02,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1162 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:21:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-08 17:21:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2024-11-08 17:21:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.4569536423841059) internal successors, (220), 151 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 220 transitions. [2024-11-08 17:21:02,334 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 220 transitions. Word has length 44 [2024-11-08 17:21:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:02,335 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 220 transitions. [2024-11-08 17:21:02,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 220 transitions. [2024-11-08 17:21:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 17:21:02,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:02,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:02,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:21:02,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:02,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1609486792, now seen corresponding path program 1 times [2024-11-08 17:21:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:02,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027050539] [2024-11-08 17:21:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:02,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:03,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027050539] [2024-11-08 17:21:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027050539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:03,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:03,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:21:03,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522679278] [2024-11-08 17:21:03,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:03,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:21:03,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:21:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:21:03,244 INFO L87 Difference]: Start difference. First operand 152 states and 220 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:03,585 INFO L93 Difference]: Finished difference Result 255 states and 367 transitions. [2024-11-08 17:21:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:21:03,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-08 17:21:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:03,587 INFO L225 Difference]: With dead ends: 255 [2024-11-08 17:21:03,587 INFO L226 Difference]: Without dead ends: 157 [2024-11-08 17:21:03,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:21:03,588 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 195 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:03,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1252 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:21:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-08 17:21:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-08 17:21:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4516129032258065) internal successors, (225), 155 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2024-11-08 17:21:03,595 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 45 [2024-11-08 17:21:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:03,595 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2024-11-08 17:21:03,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2024-11-08 17:21:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 17:21:03,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:03,597 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:03,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:21:03,597 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:03,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1083691827, now seen corresponding path program 1 times [2024-11-08 17:21:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379576576] [2024-11-08 17:21:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:03,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:03,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:03,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379576576] [2024-11-08 17:21:03,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379576576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:03,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:03,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:21:03,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883675319] [2024-11-08 17:21:03,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:03,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:21:03,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:03,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:21:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:03,831 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:03,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:03,915 INFO L93 Difference]: Finished difference Result 299 states and 424 transitions. [2024-11-08 17:21:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:21:03,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-08 17:21:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:03,916 INFO L225 Difference]: With dead ends: 299 [2024-11-08 17:21:03,916 INFO L226 Difference]: Without dead ends: 197 [2024-11-08 17:21:03,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:21:03,918 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 270 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:03,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 576 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:21:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-08 17:21:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 158. [2024-11-08 17:21:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4458598726114649) internal successors, (227), 157 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 227 transitions. [2024-11-08 17:21:03,925 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 227 transitions. Word has length 45 [2024-11-08 17:21:03,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:03,925 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 227 transitions. [2024-11-08 17:21:03,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 227 transitions. [2024-11-08 17:21:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 17:21:03,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:03,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:03,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:21:03,927 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:03,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1084904957, now seen corresponding path program 1 times [2024-11-08 17:21:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:03,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142826818] [2024-11-08 17:21:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:04,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142826818] [2024-11-08 17:21:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142826818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:04,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:04,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:21:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526385959] [2024-11-08 17:21:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:04,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:21:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:21:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:21:04,300 INFO L87 Difference]: Start difference. First operand 158 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:04,357 INFO L93 Difference]: Finished difference Result 266 states and 380 transitions. [2024-11-08 17:21:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:21:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-08 17:21:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:04,358 INFO L225 Difference]: With dead ends: 266 [2024-11-08 17:21:04,358 INFO L226 Difference]: Without dead ends: 164 [2024-11-08 17:21:04,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:04,360 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 175 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:04,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 590 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:21:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-08 17:21:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-08 17:21:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4294478527607362) internal successors, (233), 163 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 233 transitions. [2024-11-08 17:21:04,367 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 233 transitions. Word has length 46 [2024-11-08 17:21:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:04,367 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 233 transitions. [2024-11-08 17:21:04,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 233 transitions. [2024-11-08 17:21:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 17:21:04,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:04,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:04,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:21:04,369 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:04,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1689472339, now seen corresponding path program 1 times [2024-11-08 17:21:04,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:04,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429920387] [2024-11-08 17:21:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:04,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:04,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429920387] [2024-11-08 17:21:04,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429920387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:04,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:04,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:21:04,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448313244] [2024-11-08 17:21:04,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:04,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:21:04,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:04,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:21:04,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:04,618 INFO L87 Difference]: Start difference. First operand 164 states and 233 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:04,710 INFO L93 Difference]: Finished difference Result 284 states and 397 transitions. [2024-11-08 17:21:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:21:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 17:21:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:04,711 INFO L225 Difference]: With dead ends: 284 [2024-11-08 17:21:04,711 INFO L226 Difference]: Without dead ends: 176 [2024-11-08 17:21:04,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:21:04,712 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 202 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:04,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 573 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:21:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-08 17:21:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2024-11-08 17:21:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.4242424242424243) internal successors, (235), 165 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2024-11-08 17:21:04,718 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 47 [2024-11-08 17:21:04,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:04,718 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2024-11-08 17:21:04,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2024-11-08 17:21:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-08 17:21:04,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:04,720 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:04,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:21:04,721 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:04,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 884819217, now seen corresponding path program 1 times [2024-11-08 17:21:04,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:04,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737195435] [2024-11-08 17:21:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:04,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:06,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737195435] [2024-11-08 17:21:06,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737195435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905389884] [2024-11-08 17:21:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:06,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:06,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:06,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:06,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:21:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:06,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 17:21:06,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:07,269 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905389884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:07,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:07,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-08 17:21:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059415674] [2024-11-08 17:21:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:07,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:21:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:21:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:21:07,277 INFO L87 Difference]: Start difference. First operand 166 states and 235 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:07,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:07,827 INFO L93 Difference]: Finished difference Result 287 states and 401 transitions. [2024-11-08 17:21:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:21:07,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-08 17:21:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:07,830 INFO L225 Difference]: With dead ends: 287 [2024-11-08 17:21:07,830 INFO L226 Difference]: Without dead ends: 179 [2024-11-08 17:21:07,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:07,831 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 196 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:07,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 162 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:21:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-08 17:21:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2024-11-08 17:21:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.3954802259887005) internal successors, (247), 177 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 247 transitions. [2024-11-08 17:21:07,838 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 247 transitions. Word has length 89 [2024-11-08 17:21:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:07,838 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 247 transitions. [2024-11-08 17:21:07,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 247 transitions. [2024-11-08 17:21:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:21:07,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:07,844 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:07,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:21:08,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 17:21:08,045 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:08,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1161530668, now seen corresponding path program 1 times [2024-11-08 17:21:08,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:08,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24526005] [2024-11-08 17:21:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:09,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:09,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24526005] [2024-11-08 17:21:09,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24526005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:09,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:09,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:21:09,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811052740] [2024-11-08 17:21:09,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:09,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:21:09,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:09,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:21:09,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:09,691 INFO L87 Difference]: Start difference. First operand 178 states and 247 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:10,197 INFO L93 Difference]: Finished difference Result 324 states and 454 transitions. [2024-11-08 17:21:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:21:10,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-08 17:21:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:10,200 INFO L225 Difference]: With dead ends: 324 [2024-11-08 17:21:10,200 INFO L226 Difference]: Without dead ends: 216 [2024-11-08 17:21:10,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:10,201 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 349 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:10,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 402 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:21:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-08 17:21:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 189. [2024-11-08 17:21:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.3936170212765957) internal successors, (262), 188 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 262 transitions. [2024-11-08 17:21:10,210 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 262 transitions. Word has length 91 [2024-11-08 17:21:10,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:10,211 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 262 transitions. [2024-11-08 17:21:10,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 262 transitions. [2024-11-08 17:21:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:21:10,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:10,215 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:10,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:21:10,215 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:10,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1196244165, now seen corresponding path program 1 times [2024-11-08 17:21:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082355753] [2024-11-08 17:21:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:10,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:11,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082355753] [2024-11-08 17:21:11,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082355753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:11,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:11,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:21:11,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74050034] [2024-11-08 17:21:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:11,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:21:11,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:21:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:11,743 INFO L87 Difference]: Start difference. First operand 189 states and 262 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:12,414 INFO L93 Difference]: Finished difference Result 340 states and 477 transitions. [2024-11-08 17:21:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:21:12,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 17:21:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:12,416 INFO L225 Difference]: With dead ends: 340 [2024-11-08 17:21:12,417 INFO L226 Difference]: Without dead ends: 232 [2024-11-08 17:21:12,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:12,418 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 335 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:12,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 436 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:21:12,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-08 17:21:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 209. [2024-11-08 17:21:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3990384615384615) internal successors, (291), 208 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2024-11-08 17:21:12,426 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 92 [2024-11-08 17:21:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:12,427 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2024-11-08 17:21:12,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2024-11-08 17:21:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 17:21:12,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:12,429 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:12,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:21:12,430 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:12,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:12,431 INFO L85 PathProgramCache]: Analyzing trace with hash 88962103, now seen corresponding path program 1 times [2024-11-08 17:21:12,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:12,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162151069] [2024-11-08 17:21:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:12,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:14,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:14,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162151069] [2024-11-08 17:21:14,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162151069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:14,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:14,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:21:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127097850] [2024-11-08 17:21:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:14,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:21:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:21:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:14,457 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:15,710 INFO L93 Difference]: Finished difference Result 438 states and 613 transitions. [2024-11-08 17:21:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:21:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-08 17:21:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:15,712 INFO L225 Difference]: With dead ends: 438 [2024-11-08 17:21:15,713 INFO L226 Difference]: Without dead ends: 330 [2024-11-08 17:21:15,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:15,715 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 343 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:15,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 470 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:21:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-08 17:21:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 292. [2024-11-08 17:21:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.4123711340206186) internal successors, (411), 291 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 411 transitions. [2024-11-08 17:21:15,728 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 411 transitions. Word has length 93 [2024-11-08 17:21:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:15,729 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 411 transitions. [2024-11-08 17:21:15,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 411 transitions. [2024-11-08 17:21:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 17:21:15,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:15,730 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:15,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:21:15,731 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:15,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash -422948671, now seen corresponding path program 1 times [2024-11-08 17:21:15,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:15,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547764560] [2024-11-08 17:21:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:17,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:17,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547764560] [2024-11-08 17:21:17,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547764560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:17,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:17,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:21:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891124668] [2024-11-08 17:21:17,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:17,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:21:17,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:21:17,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:17,631 INFO L87 Difference]: Start difference. First operand 292 states and 411 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:18,839 INFO L93 Difference]: Finished difference Result 497 states and 697 transitions. [2024-11-08 17:21:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:21:18,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-08 17:21:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:18,841 INFO L225 Difference]: With dead ends: 497 [2024-11-08 17:21:18,841 INFO L226 Difference]: Without dead ends: 330 [2024-11-08 17:21:18,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:18,843 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 235 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:18,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 585 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:21:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-08 17:21:18,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 294. [2024-11-08 17:21:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.4095563139931742) internal successors, (413), 293 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 413 transitions. [2024-11-08 17:21:18,854 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 413 transitions. Word has length 94 [2024-11-08 17:21:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:18,854 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 413 transitions. [2024-11-08 17:21:18,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 413 transitions. [2024-11-08 17:21:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 17:21:18,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:18,856 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:18,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:21:18,856 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:18,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1708088567, now seen corresponding path program 1 times [2024-11-08 17:21:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:18,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871263960] [2024-11-08 17:21:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:18,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871263960] [2024-11-08 17:21:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871263960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485182885] [2024-11-08 17:21:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:20,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:20,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:20,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:20,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:21:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:21,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 17:21:21,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:22,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:21:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485182885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:21:24,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:21:24,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 27 [2024-11-08 17:21:24,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138005141] [2024-11-08 17:21:24,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:21:24,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 17:21:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 17:21:24,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:21:24,203 INFO L87 Difference]: Start difference. First operand 294 states and 413 transitions. Second operand has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:29,161 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2024-11-08 17:21:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 17:21:29,162 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-08 17:21:29,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:29,165 INFO L225 Difference]: With dead ends: 743 [2024-11-08 17:21:29,165 INFO L226 Difference]: Without dead ends: 574 [2024-11-08 17:21:29,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=476, Invalid=2716, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 17:21:29,167 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 1914 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:29,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1914 Valid, 838 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 17:21:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-08 17:21:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 411. [2024-11-08 17:21:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.424390243902439) internal successors, (584), 410 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 584 transitions. [2024-11-08 17:21:29,182 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 584 transitions. Word has length 94 [2024-11-08 17:21:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:29,183 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 584 transitions. [2024-11-08 17:21:29,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 584 transitions. [2024-11-08 17:21:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 17:21:29,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:29,185 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:29,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:21:29,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:29,390 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:29,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1292753692, now seen corresponding path program 1 times [2024-11-08 17:21:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:29,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189678687] [2024-11-08 17:21:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:29,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:32,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189678687] [2024-11-08 17:21:32,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189678687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:32,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:32,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:21:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833345243] [2024-11-08 17:21:32,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:32,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:21:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:32,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:21:32,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:21:32,163 INFO L87 Difference]: Start difference. First operand 411 states and 584 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:33,031 INFO L93 Difference]: Finished difference Result 690 states and 982 transitions. [2024-11-08 17:21:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:21:33,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-08 17:21:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:33,033 INFO L225 Difference]: With dead ends: 690 [2024-11-08 17:21:33,033 INFO L226 Difference]: Without dead ends: 412 [2024-11-08 17:21:33,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:21:33,034 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 211 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:33,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 722 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:21:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-08 17:21:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2024-11-08 17:21:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.421951219512195) internal successors, (583), 410 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 583 transitions. [2024-11-08 17:21:33,045 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 583 transitions. Word has length 96 [2024-11-08 17:21:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:33,045 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 583 transitions. [2024-11-08 17:21:33,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 583 transitions. [2024-11-08 17:21:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 17:21:33,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:33,047 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:33,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:21:33,047 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:33,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash -473662624, now seen corresponding path program 1 times [2024-11-08 17:21:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:33,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418184019] [2024-11-08 17:21:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418184019] [2024-11-08 17:21:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418184019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277484193] [2024-11-08 17:21:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:35,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:35,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:35,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:35,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:21:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:36,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 17:21:36,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:37,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:21:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277484193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:21:38,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:21:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 25 [2024-11-08 17:21:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124788339] [2024-11-08 17:21:38,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:21:38,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:21:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:21:38,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:21:38,353 INFO L87 Difference]: Start difference. First operand 411 states and 583 transitions. Second operand has 25 states, 25 states have (on average 9.08) internal successors, (227), 25 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:40,599 INFO L93 Difference]: Finished difference Result 652 states and 922 transitions. [2024-11-08 17:21:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:21:40,600 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.08) internal successors, (227), 25 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-08 17:21:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:40,602 INFO L225 Difference]: With dead ends: 652 [2024-11-08 17:21:40,603 INFO L226 Difference]: Without dead ends: 372 [2024-11-08 17:21:40,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:21:40,605 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 451 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:40,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 753 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:21:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-08 17:21:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 362. [2024-11-08 17:21:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.4155124653739612) internal successors, (511), 361 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 511 transitions. [2024-11-08 17:21:40,618 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 511 transitions. Word has length 97 [2024-11-08 17:21:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:40,618 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 511 transitions. [2024-11-08 17:21:40,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.08) internal successors, (227), 25 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 511 transitions. [2024-11-08 17:21:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-08 17:21:40,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:40,622 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:40,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:21:40,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:21:40,827 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:40,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1506269953, now seen corresponding path program 1 times [2024-11-08 17:21:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:40,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680851815] [2024-11-08 17:21:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:40,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:44,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:44,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680851815] [2024-11-08 17:21:44,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680851815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:44,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:44,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:21:44,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905659922] [2024-11-08 17:21:44,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:44,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:21:44,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:21:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:21:44,515 INFO L87 Difference]: Start difference. First operand 362 states and 511 transitions. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:45,801 INFO L93 Difference]: Finished difference Result 1050 states and 1501 transitions. [2024-11-08 17:21:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:21:45,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-11-08 17:21:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:45,805 INFO L225 Difference]: With dead ends: 1050 [2024-11-08 17:21:45,806 INFO L226 Difference]: Without dead ends: 823 [2024-11-08 17:21:45,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:21:45,807 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 297 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:45,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 724 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:21:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-11-08 17:21:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 602. [2024-11-08 17:21:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.415973377703827) internal successors, (851), 601 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 851 transitions. [2024-11-08 17:21:45,856 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 851 transitions. Word has length 141 [2024-11-08 17:21:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:45,856 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 851 transitions. [2024-11-08 17:21:45,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 851 transitions. [2024-11-08 17:21:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-08 17:21:45,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:45,862 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:45,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:21:45,867 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:45,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash -443698910, now seen corresponding path program 1 times [2024-11-08 17:21:45,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:45,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468868973] [2024-11-08 17:21:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:45,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:21:49,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468868973] [2024-11-08 17:21:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468868973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:49,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:49,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:21:49,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110797017] [2024-11-08 17:21:49,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:49,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:21:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:21:49,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:49,750 INFO L87 Difference]: Start difference. First operand 602 states and 851 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:50,850 INFO L93 Difference]: Finished difference Result 1450 states and 2039 transitions. [2024-11-08 17:21:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:21:50,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-08 17:21:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:50,855 INFO L225 Difference]: With dead ends: 1450 [2024-11-08 17:21:50,855 INFO L226 Difference]: Without dead ends: 1010 [2024-11-08 17:21:50,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:21:50,857 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 305 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:50,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 523 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:21:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2024-11-08 17:21:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 678. [2024-11-08 17:21:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.395864106351551) internal successors, (945), 677 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 945 transitions. [2024-11-08 17:21:50,889 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 945 transitions. Word has length 142 [2024-11-08 17:21:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:50,890 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 945 transitions. [2024-11-08 17:21:50,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 945 transitions. [2024-11-08 17:21:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-08 17:21:50,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:50,894 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:50,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:21:50,894 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:50,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1345662302, now seen corresponding path program 1 times [2024-11-08 17:21:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668754722] [2024-11-08 17:21:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 17:21:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:54,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668754722] [2024-11-08 17:21:54,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668754722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:54,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:54,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:21:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271836706] [2024-11-08 17:21:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:54,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:21:54,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:54,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:21:54,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:54,459 INFO L87 Difference]: Start difference. First operand 678 states and 945 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:55,144 INFO L93 Difference]: Finished difference Result 1208 states and 1686 transitions. [2024-11-08 17:21:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:21:55,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-08 17:21:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:55,148 INFO L225 Difference]: With dead ends: 1208 [2024-11-08 17:21:55,150 INFO L226 Difference]: Without dead ends: 667 [2024-11-08 17:21:55,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:21:55,152 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 326 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:55,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 165 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:21:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-08 17:21:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-08 17:21:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.3933933933933933) internal successors, (928), 666 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 928 transitions. [2024-11-08 17:21:55,176 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 928 transitions. Word has length 143 [2024-11-08 17:21:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:55,176 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 928 transitions. [2024-11-08 17:21:55,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:21:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 928 transitions. [2024-11-08 17:21:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-08 17:21:55,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:55,180 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:55,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:21:55,181 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:55,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1401979757, now seen corresponding path program 1 times [2024-11-08 17:21:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689796097] [2024-11-08 17:21:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689796097] [2024-11-08 17:22:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689796097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115376589] [2024-11-08 17:22:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:00,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:00,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:00,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:00,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:22:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:02,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 17:22:02,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:03,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 46 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115376589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:22:05,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:22:05,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 41 [2024-11-08 17:22:05,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992358478] [2024-11-08 17:22:05,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:22:05,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 17:22:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 17:22:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:22:05,250 INFO L87 Difference]: Start difference. First operand 667 states and 928 transitions. Second operand has 41 states, 41 states have (on average 9.78048780487805) internal successors, (401), 41 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:22:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:16,738 INFO L93 Difference]: Finished difference Result 7336 states and 10305 transitions. [2024-11-08 17:22:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-08 17:22:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 9.78048780487805) internal successors, (401), 41 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-08 17:22:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:16,766 INFO L225 Difference]: With dead ends: 7336 [2024-11-08 17:22:16,767 INFO L226 Difference]: Without dead ends: 6830 [2024-11-08 17:22:16,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7160 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2233, Invalid=20117, Unknown=0, NotChecked=0, Total=22350 [2024-11-08 17:22:16,782 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1827 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 6135 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 6155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:16,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 2166 Invalid, 6155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 6135 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-08 17:22:16,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6830 states. [2024-11-08 17:22:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6830 to 2928. [2024-11-08 17:22:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 1.4092927912538435) internal successors, (4125), 2927 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:22:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4125 transitions. [2024-11-08 17:22:16,945 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4125 transitions. Word has length 143 [2024-11-08 17:22:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:16,946 INFO L471 AbstractCegarLoop]: Abstraction has 2928 states and 4125 transitions. [2024-11-08 17:22:16,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.78048780487805) internal successors, (401), 41 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:22:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4125 transitions. [2024-11-08 17:22:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-08 17:22:16,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:16,952 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:16,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:22:17,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:17,154 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:17,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash -822588161, now seen corresponding path program 1 times [2024-11-08 17:22:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905433125] [2024-11-08 17:22:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 45 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:22,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905433125] [2024-11-08 17:22:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905433125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836024217] [2024-11-08 17:22:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:22,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:22,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:22,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:22:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:23,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-08 17:22:23,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:24,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 47 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836024217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:22:26,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:22:26,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 43 [2024-11-08 17:22:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076930653] [2024-11-08 17:22:26,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:22:26,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 17:22:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 17:22:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1646, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 17:22:26,271 INFO L87 Difference]: Start difference. First operand 2928 states and 4125 transitions. Second operand has 43 states, 43 states have (on average 9.69767441860465) internal successors, (417), 43 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:22:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:43,123 INFO L93 Difference]: Finished difference Result 13922 states and 19635 transitions. [2024-11-08 17:22:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-11-08 17:22:43,124 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 9.69767441860465) internal successors, (417), 43 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-11-08 17:22:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:43,153 INFO L225 Difference]: With dead ends: 13922 [2024-11-08 17:22:43,153 INFO L226 Difference]: Without dead ends: 10524 [2024-11-08 17:22:43,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16486 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=3043, Invalid=42967, Unknown=0, NotChecked=0, Total=46010 [2024-11-08 17:22:43,168 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 2207 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 11270 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 11283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:43,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 3994 Invalid, 11283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 11270 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-08 17:22:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10524 states. [2024-11-08 17:22:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10524 to 5459. [2024-11-08 17:22:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 5458 states have (on average 1.4005130084279955) internal successors, (7644), 5458 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:22:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 7644 transitions. [2024-11-08 17:22:43,385 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 7644 transitions. Word has length 144 [2024-11-08 17:22:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:43,385 INFO L471 AbstractCegarLoop]: Abstraction has 5459 states and 7644 transitions. [2024-11-08 17:22:43,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 9.69767441860465) internal successors, (417), 43 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:22:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 7644 transitions. [2024-11-08 17:22:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-08 17:22:43,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:43,394 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:43,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:22:43,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:43,595 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:43,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1860390315, now seen corresponding path program 1 times [2024-11-08 17:22:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:43,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050782825] [2024-11-08 17:22:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:43,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:45,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050782825] [2024-11-08 17:22:45,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050782825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241862724] [2024-11-08 17:22:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:45,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:45,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:45,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:45,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:22:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:46,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-08 17:22:46,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 45 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:48,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:22:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241862724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:22:49,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:22:49,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17, 15] total 35 [2024-11-08 17:22:49,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681564876] [2024-11-08 17:22:49,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:22:49,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 17:22:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 17:22:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:22:49,318 INFO L87 Difference]: Start difference. First operand 5459 states and 7644 transitions. Second operand has 35 states, 35 states have (on average 11.914285714285715) internal successors, (417), 35 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:02,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:02,145 INFO L93 Difference]: Finished difference Result 29098 states and 40926 transitions. [2024-11-08 17:23:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-08 17:23:02,148 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 11.914285714285715) internal successors, (417), 35 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-11-08 17:23:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:02,201 INFO L225 Difference]: With dead ends: 29098 [2024-11-08 17:23:02,201 INFO L226 Difference]: Without dead ends: 23380 [2024-11-08 17:23:02,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4193 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1330, Invalid=13190, Unknown=0, NotChecked=0, Total=14520 [2024-11-08 17:23:02,215 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 933 mSDsluCounter, 5526 mSDsCounter, 0 mSdLazyCounter, 14759 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 5783 SdHoareTripleChecker+Invalid, 14771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:02,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 5783 Invalid, 14771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 14759 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-08 17:23:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23380 states. [2024-11-08 17:23:02,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23380 to 10525. [2024-11-08 17:23:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10525 states, 10524 states have (on average 1.4179969593310529) internal successors, (14923), 10524 states have internal predecessors, (14923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 14923 transitions. [2024-11-08 17:23:02,638 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 14923 transitions. Word has length 144 [2024-11-08 17:23:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:02,639 INFO L471 AbstractCegarLoop]: Abstraction has 10525 states and 14923 transitions. [2024-11-08 17:23:02,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 11.914285714285715) internal successors, (417), 35 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 14923 transitions. [2024-11-08 17:23:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-08 17:23:02,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:02,659 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:02,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:23:02,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:02,860 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:02,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 437052957, now seen corresponding path program 1 times [2024-11-08 17:23:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140692566] [2024-11-08 17:23:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:02,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:06,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:06,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140692566] [2024-11-08 17:23:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140692566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:06,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:06,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 17:23:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519780873] [2024-11-08 17:23:06,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:06,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:23:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:06,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:23:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:23:06,187 INFO L87 Difference]: Start difference. First operand 10525 states and 14923 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:07,290 INFO L93 Difference]: Finished difference Result 20177 states and 28658 transitions. [2024-11-08 17:23:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:23:07,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-11-08 17:23:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:07,314 INFO L225 Difference]: With dead ends: 20177 [2024-11-08 17:23:07,314 INFO L226 Difference]: Without dead ends: 11297 [2024-11-08 17:23:07,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:23:07,327 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 296 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:07,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 675 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:23:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11297 states. [2024-11-08 17:23:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11297 to 10549. [2024-11-08 17:23:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10549 states, 10548 states have (on average 1.4170458854759196) internal successors, (14947), 10548 states have internal predecessors, (14947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10549 states to 10549 states and 14947 transitions. [2024-11-08 17:23:07,630 INFO L78 Accepts]: Start accepts. Automaton has 10549 states and 14947 transitions. Word has length 144 [2024-11-08 17:23:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:07,630 INFO L471 AbstractCegarLoop]: Abstraction has 10549 states and 14947 transitions. [2024-11-08 17:23:07,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 10549 states and 14947 transitions. [2024-11-08 17:23:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 17:23:07,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:07,648 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:07,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 17:23:07,648 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:07,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash -37544896, now seen corresponding path program 1 times [2024-11-08 17:23:07,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:07,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923568591] [2024-11-08 17:23:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:07,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:23:09,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:09,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923568591] [2024-11-08 17:23:09,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923568591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:09,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:23:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339978737] [2024-11-08 17:23:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:09,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:23:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:23:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:23:09,619 INFO L87 Difference]: Start difference. First operand 10549 states and 14947 transitions. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:11,048 INFO L93 Difference]: Finished difference Result 26598 states and 37828 transitions. [2024-11-08 17:23:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:23:11,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-08 17:23:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:11,074 INFO L225 Difference]: With dead ends: 26598 [2024-11-08 17:23:11,074 INFO L226 Difference]: Without dead ends: 16434 [2024-11-08 17:23:11,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:23:11,089 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 216 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:11,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 708 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:23:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16434 states. [2024-11-08 17:23:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16434 to 10121. [2024-11-08 17:23:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10121 states, 10120 states have (on average 1.4148221343873517) internal successors, (14318), 10120 states have internal predecessors, (14318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10121 states to 10121 states and 14318 transitions. [2024-11-08 17:23:11,409 INFO L78 Accepts]: Start accepts. Automaton has 10121 states and 14318 transitions. Word has length 145 [2024-11-08 17:23:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:11,410 INFO L471 AbstractCegarLoop]: Abstraction has 10121 states and 14318 transitions. [2024-11-08 17:23:11,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 10121 states and 14318 transitions. [2024-11-08 17:23:11,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 17:23:11,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:11,429 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:11,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 17:23:11,429 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:11,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1022259426, now seen corresponding path program 1 times [2024-11-08 17:23:11,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:11,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802217332] [2024-11-08 17:23:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 17:23:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:16,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802217332] [2024-11-08 17:23:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802217332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:23:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900000120] [2024-11-08 17:23:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:16,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:23:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:23:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:16,210 INFO L87 Difference]: Start difference. First operand 10121 states and 14318 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:16,870 INFO L93 Difference]: Finished difference Result 18603 states and 26380 transitions. [2024-11-08 17:23:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:23:16,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-08 17:23:16,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:16,882 INFO L225 Difference]: With dead ends: 18603 [2024-11-08 17:23:16,883 INFO L226 Difference]: Without dead ends: 8713 [2024-11-08 17:23:16,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:23:16,894 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 194 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:16,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 175 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:23:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8713 states. [2024-11-08 17:23:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8713 to 8703. [2024-11-08 17:23:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8703 states, 8702 states have (on average 1.4196736382440818) internal successors, (12354), 8702 states have internal predecessors, (12354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8703 states to 8703 states and 12354 transitions. [2024-11-08 17:23:17,138 INFO L78 Accepts]: Start accepts. Automaton has 8703 states and 12354 transitions. Word has length 145 [2024-11-08 17:23:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:17,139 INFO L471 AbstractCegarLoop]: Abstraction has 8703 states and 12354 transitions. [2024-11-08 17:23:17,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8703 states and 12354 transitions. [2024-11-08 17:23:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 17:23:17,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:17,152 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:17,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 17:23:17,153 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:17,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1576008717, now seen corresponding path program 1 times [2024-11-08 17:23:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527595036] [2024-11-08 17:23:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527595036] [2024-11-08 17:23:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527595036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:20,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:23:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009888825] [2024-11-08 17:23:20,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:20,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:23:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:20,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:23:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:23:20,283 INFO L87 Difference]: Start difference. First operand 8703 states and 12354 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:21,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:21,097 INFO L93 Difference]: Finished difference Result 21821 states and 30894 transitions. [2024-11-08 17:23:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:23:21,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-08 17:23:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:21,109 INFO L225 Difference]: With dead ends: 21821 [2024-11-08 17:23:21,109 INFO L226 Difference]: Without dead ends: 13349 [2024-11-08 17:23:21,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:23:21,120 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 238 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:21,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 501 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:23:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13349 states. [2024-11-08 17:23:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13349 to 8565. [2024-11-08 17:23:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8565 states, 8564 states have (on average 1.4229332087809434) internal successors, (12186), 8564 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8565 states to 8565 states and 12186 transitions. [2024-11-08 17:23:21,406 INFO L78 Accepts]: Start accepts. Automaton has 8565 states and 12186 transitions. Word has length 145 [2024-11-08 17:23:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:21,407 INFO L471 AbstractCegarLoop]: Abstraction has 8565 states and 12186 transitions. [2024-11-08 17:23:21,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 8565 states and 12186 transitions. [2024-11-08 17:23:21,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 17:23:21,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:21,419 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:21,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 17:23:21,420 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:21,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:21,420 INFO L85 PathProgramCache]: Analyzing trace with hash -170518974, now seen corresponding path program 1 times [2024-11-08 17:23:21,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:21,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656148495] [2024-11-08 17:23:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:21,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656148495] [2024-11-08 17:23:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656148495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634578909] [2024-11-08 17:23:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:25,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:25,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:25,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:23:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:26,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 17:23:26,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 33 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:26,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634578909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:27,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 16] total 41 [2024-11-08 17:23:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36761318] [2024-11-08 17:23:27,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:27,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 17:23:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 17:23:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:23:27,861 INFO L87 Difference]: Start difference. First operand 8565 states and 12186 transitions. Second operand has 41 states, 41 states have (on average 9.414634146341463) internal successors, (386), 41 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:32,401 INFO L93 Difference]: Finished difference Result 23288 states and 32966 transitions. [2024-11-08 17:23:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 17:23:32,402 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 9.414634146341463) internal successors, (386), 41 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-08 17:23:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:32,418 INFO L225 Difference]: With dead ends: 23288 [2024-11-08 17:23:32,418 INFO L226 Difference]: Without dead ends: 13390 [2024-11-08 17:23:32,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1023, Invalid=6809, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 17:23:32,430 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3019 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:32,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3019 Valid, 1293 Invalid, 4330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 17:23:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13390 states. [2024-11-08 17:23:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13390 to 10571. [2024-11-08 17:23:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10571 states, 10570 states have (on average 1.4170293282876065) internal successors, (14978), 10570 states have internal predecessors, (14978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 14978 transitions. [2024-11-08 17:23:32,704 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 14978 transitions. Word has length 145 [2024-11-08 17:23:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:32,704 INFO L471 AbstractCegarLoop]: Abstraction has 10571 states and 14978 transitions. [2024-11-08 17:23:32,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.414634146341463) internal successors, (386), 41 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 14978 transitions. [2024-11-08 17:23:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 17:23:32,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:32,717 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:32,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:23:32,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 17:23:32,918 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:32,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:32,918 INFO L85 PathProgramCache]: Analyzing trace with hash 764789033, now seen corresponding path program 1 times [2024-11-08 17:23:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583510053] [2024-11-08 17:23:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:32,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:34,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:34,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583510053] [2024-11-08 17:23:34,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583510053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:34,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870657875] [2024-11-08 17:23:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:34,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:34,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:34,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:34,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:23:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:35,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 17:23:35,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 62 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:36,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870657875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:37,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 24 [2024-11-08 17:23:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722256367] [2024-11-08 17:23:37,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:37,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:23:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:23:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:23:37,578 INFO L87 Difference]: Start difference. First operand 10571 states and 14978 transitions. Second operand has 24 states, 24 states have (on average 14.583333333333334) internal successors, (350), 24 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:42,120 INFO L93 Difference]: Finished difference Result 58566 states and 82976 transitions. [2024-11-08 17:23:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-08 17:23:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.583333333333334) internal successors, (350), 24 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-08 17:23:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:42,157 INFO L225 Difference]: With dead ends: 58566 [2024-11-08 17:23:42,157 INFO L226 Difference]: Without dead ends: 48098 [2024-11-08 17:23:42,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=860, Invalid=6972, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 17:23:42,167 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1110 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 3897 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:42,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1304 Invalid, 3912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3897 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 17:23:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48098 states. [2024-11-08 17:23:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48098 to 21182. [2024-11-08 17:23:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21182 states, 21181 states have (on average 1.4006892970114726) internal successors, (29668), 21181 states have internal predecessors, (29668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21182 states to 21182 states and 29668 transitions. [2024-11-08 17:23:42,884 INFO L78 Accepts]: Start accepts. Automaton has 21182 states and 29668 transitions. Word has length 145 [2024-11-08 17:23:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:42,884 INFO L471 AbstractCegarLoop]: Abstraction has 21182 states and 29668 transitions. [2024-11-08 17:23:42,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.583333333333334) internal successors, (350), 24 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 21182 states and 29668 transitions. [2024-11-08 17:23:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-08 17:23:42,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:42,906 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:42,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:43,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:43,107 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:43,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1457810992, now seen corresponding path program 1 times [2024-11-08 17:23:43,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:43,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796541083] [2024-11-08 17:23:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:43,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:23:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796541083] [2024-11-08 17:23:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796541083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:44,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:23:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146046156] [2024-11-08 17:23:44,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:44,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:23:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:23:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:44,832 INFO L87 Difference]: Start difference. First operand 21182 states and 29668 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:45,536 INFO L93 Difference]: Finished difference Result 42248 states and 59179 transitions. [2024-11-08 17:23:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:23:45,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-08 17:23:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:45,556 INFO L225 Difference]: With dead ends: 42248 [2024-11-08 17:23:45,556 INFO L226 Difference]: Without dead ends: 21186 [2024-11-08 17:23:45,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:23:45,568 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 256 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:45,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 177 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:23:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21186 states. [2024-11-08 17:23:46,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21186 to 21167. [2024-11-08 17:23:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21167 states, 21166 states have (on average 1.4006897855050553) internal successors, (29647), 21166 states have internal predecessors, (29647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21167 states to 21167 states and 29647 transitions. [2024-11-08 17:23:46,194 INFO L78 Accepts]: Start accepts. Automaton has 21167 states and 29647 transitions. Word has length 146 [2024-11-08 17:23:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:46,195 INFO L471 AbstractCegarLoop]: Abstraction has 21167 states and 29647 transitions. [2024-11-08 17:23:46,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand 21167 states and 29647 transitions. [2024-11-08 17:23:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-08 17:23:46,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:46,204 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:46,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-08 17:23:46,205 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:46,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash -717879092, now seen corresponding path program 1 times [2024-11-08 17:23:46,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:46,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120178709] [2024-11-08 17:23:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 17:23:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120178709] [2024-11-08 17:23:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120178709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:47,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:23:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236257645] [2024-11-08 17:23:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:47,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:23:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:23:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:47,723 INFO L87 Difference]: Start difference. First operand 21167 states and 29647 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:48,296 INFO L93 Difference]: Finished difference Result 32301 states and 45517 transitions. [2024-11-08 17:23:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:23:48,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-08 17:23:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:48,312 INFO L225 Difference]: With dead ends: 32301 [2024-11-08 17:23:48,312 INFO L226 Difference]: Without dead ends: 11239 [2024-11-08 17:23:48,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:23:48,326 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 245 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:48,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 179 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:23:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11239 states. [2024-11-08 17:23:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11239 to 9833. [2024-11-08 17:23:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9833 states, 9832 states have (on average 1.394833197721725) internal successors, (13714), 9832 states have internal predecessors, (13714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9833 states to 9833 states and 13714 transitions. [2024-11-08 17:23:48,519 INFO L78 Accepts]: Start accepts. Automaton has 9833 states and 13714 transitions. Word has length 147 [2024-11-08 17:23:48,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:48,520 INFO L471 AbstractCegarLoop]: Abstraction has 9833 states and 13714 transitions. [2024-11-08 17:23:48,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 9833 states and 13714 transitions. [2024-11-08 17:23:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-08 17:23:48,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:48,524 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:48,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-08 17:23:48,524 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:48,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash 985519863, now seen corresponding path program 1 times [2024-11-08 17:23:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776422792] [2024-11-08 17:23:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:48,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 17:23:51,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:51,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776422792] [2024-11-08 17:23:51,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776422792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:51,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25501256] [2024-11-08 17:23:51,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:51,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:51,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:51,129 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:51,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:23:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:52,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-08 17:23:52,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 17:23:53,661 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:23:53,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25501256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:53,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:23:53,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2024-11-08 17:23:53,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969325400] [2024-11-08 17:23:53,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:53,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:23:53,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:53,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:23:53,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:23:53,662 INFO L87 Difference]: Start difference. First operand 9833 states and 13714 transitions. Second operand has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:55,122 INFO L93 Difference]: Finished difference Result 30930 states and 43488 transitions. [2024-11-08 17:23:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 17:23:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2024-11-08 17:23:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:55,143 INFO L225 Difference]: With dead ends: 30930 [2024-11-08 17:23:55,144 INFO L226 Difference]: Without dead ends: 21202 [2024-11-08 17:23:55,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:23:55,154 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 317 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:55,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 748 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:23:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21202 states. [2024-11-08 17:23:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21202 to 13222. [2024-11-08 17:23:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13222 states, 13221 states have (on average 1.3914983737992588) internal successors, (18397), 13221 states have internal predecessors, (18397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13222 states to 13222 states and 18397 transitions. [2024-11-08 17:23:55,568 INFO L78 Accepts]: Start accepts. Automaton has 13222 states and 18397 transitions. Word has length 193 [2024-11-08 17:23:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:55,568 INFO L471 AbstractCegarLoop]: Abstraction has 13222 states and 18397 transitions. [2024-11-08 17:23:55,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 13222 states and 18397 transitions. [2024-11-08 17:23:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-08 17:23:55,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:55,579 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:55,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:55,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-08 17:23:55,780 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:55,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1409394797, now seen corresponding path program 1 times [2024-11-08 17:23:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374757694] [2024-11-08 17:23:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:55,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 17:23:58,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:58,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374757694] [2024-11-08 17:23:58,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374757694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:58,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646375636] [2024-11-08 17:23:58,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:58,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:58,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:58,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:58,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:24:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:00,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 2085 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-08 17:24:00,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 135 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:24:01,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:24:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 168 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 17:24:02,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646375636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:24:02,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:24:02,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2024-11-08 17:24:02,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063090668] [2024-11-08 17:24:02,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:24:02,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:24:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:24:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:24:02,227 INFO L87 Difference]: Start difference. First operand 13222 states and 18397 transitions. Second operand has 26 states, 26 states have (on average 19.96153846153846) internal successors, (519), 26 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:24:05,331 INFO L93 Difference]: Finished difference Result 45034 states and 62611 transitions. [2024-11-08 17:24:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 17:24:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 19.96153846153846) internal successors, (519), 26 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-11-08 17:24:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:24:05,360 INFO L225 Difference]: With dead ends: 45034 [2024-11-08 17:24:05,360 INFO L226 Difference]: Without dead ends: 31917 [2024-11-08 17:24:05,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=254, Invalid=1306, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 17:24:05,372 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 1111 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:24:05,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1618 Invalid, 4265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 17:24:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31917 states. [2024-11-08 17:24:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31917 to 21959. [2024-11-08 17:24:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21959 states, 21958 states have (on average 1.3860551962838146) internal successors, (30435), 21958 states have internal predecessors, (30435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21959 states to 21959 states and 30435 transitions. [2024-11-08 17:24:05,904 INFO L78 Accepts]: Start accepts. Automaton has 21959 states and 30435 transitions. Word has length 194 [2024-11-08 17:24:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:24:05,905 INFO L471 AbstractCegarLoop]: Abstraction has 21959 states and 30435 transitions. [2024-11-08 17:24:05,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 19.96153846153846) internal successors, (519), 26 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 21959 states and 30435 transitions. [2024-11-08 17:24:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-08 17:24:05,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:24:05,915 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:05,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:06,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:06,116 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:24:06,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1193033922, now seen corresponding path program 2 times [2024-11-08 17:24:06,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:06,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447356730] [2024-11-08 17:24:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 17:24:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447356730] [2024-11-08 17:24:10,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447356730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:10,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:10,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:24:10,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020856031] [2024-11-08 17:24:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:10,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:24:10,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:24:10,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:24:10,973 INFO L87 Difference]: Start difference. First operand 21959 states and 30435 transitions. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:12,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:24:12,049 INFO L93 Difference]: Finished difference Result 60657 states and 84909 transitions. [2024-11-08 17:24:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:24:12,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2024-11-08 17:24:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:24:12,086 INFO L225 Difference]: With dead ends: 60657 [2024-11-08 17:24:12,086 INFO L226 Difference]: Without dead ends: 38803 [2024-11-08 17:24:12,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:24:12,102 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 232 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:24:12,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 562 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:24:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38803 states. [2024-11-08 17:24:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38803 to 27824. [2024-11-08 17:24:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27824 states, 27823 states have (on average 1.3836034935125616) internal successors, (38496), 27823 states have internal predecessors, (38496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27824 states to 27824 states and 38496 transitions. [2024-11-08 17:24:12,936 INFO L78 Accepts]: Start accepts. Automaton has 27824 states and 38496 transitions. Word has length 195 [2024-11-08 17:24:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:24:12,939 INFO L471 AbstractCegarLoop]: Abstraction has 27824 states and 38496 transitions. [2024-11-08 17:24:12,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 27824 states and 38496 transitions. [2024-11-08 17:24:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-08 17:24:12,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:24:12,956 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:12,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-08 17:24:12,956 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:24:12,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1679945377, now seen corresponding path program 2 times [2024-11-08 17:24:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:12,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987826974] [2024-11-08 17:24:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:12,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 17:24:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987826974] [2024-11-08 17:24:23,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987826974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104039365] [2024-11-08 17:24:23,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:24:23,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:23,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:23,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:23,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:24:27,094 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:24:27,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:24:27,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-08 17:24:27,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 141 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:24:28,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:24:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 146 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 17:24:31,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104039365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:24:31,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:24:31,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 15] total 38 [2024-11-08 17:24:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976518182] [2024-11-08 17:24:31,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:24:31,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 17:24:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 17:24:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 17:24:31,648 INFO L87 Difference]: Start difference. First operand 27824 states and 38496 transitions. Second operand has 38 states, 38 states have (on average 12.921052631578947) internal successors, (491), 38 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:38,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:24:38,925 INFO L93 Difference]: Finished difference Result 138091 states and 191620 transitions. [2024-11-08 17:24:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-08 17:24:38,926 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 12.921052631578947) internal successors, (491), 38 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2024-11-08 17:24:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:24:39,046 INFO L225 Difference]: With dead ends: 138091 [2024-11-08 17:24:39,047 INFO L226 Difference]: Without dead ends: 110372 [2024-11-08 17:24:39,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5192 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1351, Invalid=14905, Unknown=0, NotChecked=0, Total=16256 [2024-11-08 17:24:39,082 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 1969 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 4445 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 4477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:24:39,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 1632 Invalid, 4477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4445 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 17:24:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110372 states. [2024-11-08 17:24:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110372 to 75312. [2024-11-08 17:24:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75312 states, 75311 states have (on average 1.371539350161331) internal successors, (103292), 75311 states have internal predecessors, (103292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75312 states to 75312 states and 103292 transitions. [2024-11-08 17:24:41,459 INFO L78 Accepts]: Start accepts. Automaton has 75312 states and 103292 transitions. Word has length 195 [2024-11-08 17:24:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:24:41,460 INFO L471 AbstractCegarLoop]: Abstraction has 75312 states and 103292 transitions. [2024-11-08 17:24:41,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 12.921052631578947) internal successors, (491), 38 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 75312 states and 103292 transitions. [2024-11-08 17:24:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-08 17:24:41,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:24:41,532 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:41,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:24:41,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:41,733 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:24:41,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash -802696266, now seen corresponding path program 1 times [2024-11-08 17:24:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:41,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505342071] [2024-11-08 17:24:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:41,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 153 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:24:45,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:45,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505342071] [2024-11-08 17:24:45,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505342071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:45,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249117977] [2024-11-08 17:24:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:45,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:45,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:45,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:24:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:46,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-08 17:24:46,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 148 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 17:24:47,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:24:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 151 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 17:24:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249117977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:24:49,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:24:49,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 29 [2024-11-08 17:24:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857023430] [2024-11-08 17:24:49,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:24:49,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:24:49,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:24:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:24:49,529 INFO L87 Difference]: Start difference. First operand 75312 states and 103292 transitions. Second operand has 29 states, 29 states have (on average 16.0) internal successors, (464), 29 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:01,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:25:01,759 INFO L93 Difference]: Finished difference Result 235840 states and 326696 transitions. [2024-11-08 17:25:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-11-08 17:25:01,760 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 16.0) internal successors, (464), 29 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2024-11-08 17:25:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:25:01,982 INFO L225 Difference]: With dead ends: 235840 [2024-11-08 17:25:01,982 INFO L226 Difference]: Without dead ends: 160644 [2024-11-08 17:25:02,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15707 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2742, Invalid=37860, Unknown=0, NotChecked=0, Total=40602 [2024-11-08 17:25:02,036 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 2624 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 6883 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 6926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 6883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:25:02,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2624 Valid, 2303 Invalid, 6926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 6883 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 17:25:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160644 states. [2024-11-08 17:25:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160644 to 97060. [2024-11-08 17:25:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97060 states, 97059 states have (on average 1.3666532727516254) internal successors, (132646), 97059 states have internal predecessors, (132646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97060 states to 97060 states and 132646 transitions. [2024-11-08 17:25:05,868 INFO L78 Accepts]: Start accepts. Automaton has 97060 states and 132646 transitions. Word has length 195 [2024-11-08 17:25:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:25:05,869 INFO L471 AbstractCegarLoop]: Abstraction has 97060 states and 132646 transitions. [2024-11-08 17:25:05,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 16.0) internal successors, (464), 29 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 97060 states and 132646 transitions. [2024-11-08 17:25:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-08 17:25:05,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:25:05,953 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:25:05,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:25:06,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:25:06,154 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:25:06,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:25:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash 763573735, now seen corresponding path program 1 times [2024-11-08 17:25:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:25:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603433275] [2024-11-08 17:25:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:06,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:25:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 153 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 17:25:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:25:09,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603433275] [2024-11-08 17:25:09,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603433275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:25:09,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662890558] [2024-11-08 17:25:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:09,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:25:09,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:25:09,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:25:09,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:25:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:11,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-08 17:25:11,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:25:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 17:25:12,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:25:12,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662890558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:25:12,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:25:12,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2024-11-08 17:25:12,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113230461] [2024-11-08 17:25:12,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:25:12,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:25:12,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:25:12,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:25:12,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:25:12,220 INFO L87 Difference]: Start difference. First operand 97060 states and 132646 transitions. Second operand has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:25:15,603 INFO L93 Difference]: Finished difference Result 276922 states and 378778 transitions. [2024-11-08 17:25:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:25:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2024-11-08 17:25:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:25:15,863 INFO L225 Difference]: With dead ends: 276922 [2024-11-08 17:25:15,863 INFO L226 Difference]: Without dead ends: 179946 [2024-11-08 17:25:16,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:25:16,008 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 213 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:25:16,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 539 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:25:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179946 states. [2024-11-08 17:25:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179946 to 174128. [2024-11-08 17:25:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174128 states, 174127 states have (on average 1.3546434498957658) internal successors, (235880), 174127 states have internal predecessors, (235880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174128 states to 174128 states and 235880 transitions. [2024-11-08 17:25:20,782 INFO L78 Accepts]: Start accepts. Automaton has 174128 states and 235880 transitions. Word has length 197 [2024-11-08 17:25:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:25:20,782 INFO L471 AbstractCegarLoop]: Abstraction has 174128 states and 235880 transitions. [2024-11-08 17:25:20,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 174128 states and 235880 transitions. [2024-11-08 17:25:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-08 17:25:20,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:25:20,910 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:25:20,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:25:21,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 17:25:21,111 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:25:21,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:25:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1198136142, now seen corresponding path program 1 times [2024-11-08 17:25:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:25:21,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183383795] [2024-11-08 17:25:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:21,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:25:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 155 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:25:24,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:25:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183383795] [2024-11-08 17:25:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183383795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:25:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647677827] [2024-11-08 17:25:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:24,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:25:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:25:24,605 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:25:24,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a75b6-054c-43f3-a391-cb11e5866a8d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:25:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:26,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 17:25:26,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:25:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 126 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:25:27,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:25:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 155 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:25:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647677827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:25:27,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:25:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-11-08 17:25:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121728808] [2024-11-08 17:25:27,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:25:27,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:25:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:25:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:25:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:25:27,906 INFO L87 Difference]: Start difference. First operand 174128 states and 235880 transitions. Second operand has 20 states, 20 states have (on average 20.5) internal successors, (410), 20 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:25:33,787 INFO L93 Difference]: Finished difference Result 456115 states and 620558 transitions. [2024-11-08 17:25:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 17:25:33,788 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 20.5) internal successors, (410), 20 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2024-11-08 17:25:33,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:25:34,199 INFO L225 Difference]: With dead ends: 456115 [2024-11-08 17:25:34,199 INFO L226 Difference]: Without dead ends: 282071 [2024-11-08 17:25:34,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:25:34,331 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 935 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:25:34,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 919 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 17:25:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282071 states.