./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/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_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/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 32bit --witnessprinter.graph.data.programhash 8d05359bf1cd6e974dc237604ab15e53b702ce490bf8880eb5ddff78fcd04ff1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:04:46,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:04:46,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:04:46,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:04:46,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:04:46,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:04:46,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:04:46,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:04:46,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:04:46,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:04:46,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:04:46,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:04:46,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:04:46,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:04:46,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:04:46,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:04:46,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:04:46,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:04:46,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:04:46,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:04:46,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:04:46,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:04:46,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:04:46,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:04:46,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:04:46,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:04:46,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:04:46,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:04:46,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:04:46,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:04:46,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:04:46,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:04:46,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:04:46,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:04:46,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:04:46,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:04:46,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:04:46,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:04:46,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:04:46,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:04:46,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:04:46,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:04:46,485 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_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d05359bf1cd6e974dc237604ab15e53b702ce490bf8880eb5ddff78fcd04ff1 [2024-11-08 18:04:46,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:04:46,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:04:46,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:04:46,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:04:46,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:04:46,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-crafted/zero_sum1.c Unable to find full path for "g++" [2024-11-08 18:04:48,838 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:04:49,111 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:04:49,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/sv-benchmarks/c/array-crafted/zero_sum1.c [2024-11-08 18:04:49,124 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/data/c23e4bc92/27ca186462cf4b5780a5e808eda2fdec/FLAG1f51e3679 [2024-11-08 18:04:49,148 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/data/c23e4bc92/27ca186462cf4b5780a5e808eda2fdec [2024-11-08 18:04:49,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:04:49,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:04:49,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:04:49,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:04:49,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:04:49,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24003c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49, skipping insertion in model container [2024-11-08 18:04:49,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:04:49,379 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_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/sv-benchmarks/c/array-crafted/zero_sum1.c[400,413] [2024-11-08 18:04:49,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:04:49,424 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:04:49,440 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_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/sv-benchmarks/c/array-crafted/zero_sum1.c[400,413] [2024-11-08 18:04:49,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:04:49,476 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:04:49,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49 WrapperNode [2024-11-08 18:04:49,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:04:49,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:04:49,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:04:49,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:04:49,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,519 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-11-08 18:04:49,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:04:49,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:04:49,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:04:49,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:04:49,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,555 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 18:04:49,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:04:49,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:04:49,569 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:04:49,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:04:49,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (1/1) ... [2024-11-08 18:04:49,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:04:49,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:49,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:04:49,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:04:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:04:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:04:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:04:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:04:49,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:04:49,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:04:49,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:04:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:04:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:04:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:04:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:04:49,764 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:04:49,766 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:04:50,046 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-08 18:04:50,050 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:04:50,066 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:04:50,067 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:04:50,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:04:50 BoogieIcfgContainer [2024-11-08 18:04:50,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:04:50,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:04:50,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:04:50,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:04:50,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:04:49" (1/3) ... [2024-11-08 18:04:50,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da7ec6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:04:50, skipping insertion in model container [2024-11-08 18:04:50,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:49" (2/3) ... [2024-11-08 18:04:50,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da7ec6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:04:50, skipping insertion in model container [2024-11-08 18:04:50,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:04:50" (3/3) ... [2024-11-08 18:04:50,082 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum1.c [2024-11-08 18:04:50,113 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:04:50,116 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:04:50,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:04:50,184 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;@7d063246, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:04:50,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:04:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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 18:04:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 18:04:50,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:50,199 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:50,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:50,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1059246186, now seen corresponding path program 1 times [2024-11-08 18:04:50,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:50,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185371404] [2024-11-08 18:04:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:50,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:50,500 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 18:04:50,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:50,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185371404] [2024-11-08 18:04:50,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185371404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:50,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:50,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:04:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620542095] [2024-11-08 18:04:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:50,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:04:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:50,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:04:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:04:50,542 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 18:04:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:50,611 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2024-11-08 18:04:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:04:50,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-11-08 18:04:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:50,625 INFO L225 Difference]: With dead ends: 37 [2024-11-08 18:04:50,625 INFO L226 Difference]: Without dead ends: 17 [2024-11-08 18:04:50,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:04:50,631 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:50,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-08 18:04:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-08 18:04:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 18:04:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-08 18:04:50,676 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 11 [2024-11-08 18:04:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:50,676 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-08 18:04:50,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 18:04:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-08 18:04:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 18:04:50,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:50,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:50,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:04:50,680 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:50,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash -174867441, now seen corresponding path program 1 times [2024-11-08 18:04:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:50,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575552460] [2024-11-08 18:04:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:04:50,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:50,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575552460] [2024-11-08 18:04:50,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575552460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:50,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:04:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6484147] [2024-11-08 18:04:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:50,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:04:50,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:04:50,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:04:50,863 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 18:04:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:50,936 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2024-11-08 18:04:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:04:50,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-08 18:04:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:50,938 INFO L225 Difference]: With dead ends: 28 [2024-11-08 18:04:50,939 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 18:04:50,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:04:50,941 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:50,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 18:04:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-08 18:04:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 18:04:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-11-08 18:04:50,948 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2024-11-08 18:04:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:50,949 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-11-08 18:04:50,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 18:04:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-08 18:04:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 18:04:50,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:50,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:50,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:04:50,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:50,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1141884601, now seen corresponding path program 1 times [2024-11-08 18:04:50,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:50,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786231277] [2024-11-08 18:04:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:50,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:04:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786231277] [2024-11-08 18:04:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786231277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588235431] [2024-11-08 18:04:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:51,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:51,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:51,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:51,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:04:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:51,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:04:51,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:04:51,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:04:51,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588235431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:51,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:51,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 18:04:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245948940] [2024-11-08 18:04:51,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:51,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:04:51,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:51,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:04:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:04:51,333 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 18:04:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:51,440 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2024-11-08 18:04:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:04:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 17 [2024-11-08 18:04:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:51,444 INFO L225 Difference]: With dead ends: 37 [2024-11-08 18:04:51,444 INFO L226 Difference]: Without dead ends: 23 [2024-11-08 18:04:51,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:04:51,446 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:51,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-08 18:04:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-08 18:04:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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 18:04:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-08 18:04:51,462 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 17 [2024-11-08 18:04:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:51,462 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-08 18:04:51,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 18:04:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-08 18:04:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 18:04:51,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:51,465 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:51,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:04:51,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:51,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:51,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash -683105634, now seen corresponding path program 2 times [2024-11-08 18:04:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:51,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808667514] [2024-11-08 18:04:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:51,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:04:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:51,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808667514] [2024-11-08 18:04:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808667514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:51,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137245480] [2024-11-08 18:04:51,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:04:51,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:51,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:51,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:51,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:04:51,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:04:51,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:51,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:04:51,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:04:52,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:04:52,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137245480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:52,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:52,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 18:04:52,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649392736] [2024-11-08 18:04:52,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:52,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:04:52,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:04:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:04:52,126 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 18:04:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:52,266 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2024-11-08 18:04:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:04:52,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 19 [2024-11-08 18:04:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:52,269 INFO L225 Difference]: With dead ends: 35 [2024-11-08 18:04:52,269 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 18:04:52,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:04:52,271 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:52,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 18:04:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-08 18:04:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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 18:04:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-08 18:04:52,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2024-11-08 18:04:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:52,283 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-08 18:04:52,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 18:04:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-08 18:04:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 18:04:52,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:52,284 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:52,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:04:52,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:52,490 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:52,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1381702200, now seen corresponding path program 3 times [2024-11-08 18:04:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489297478] [2024-11-08 18:04:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489297478] [2024-11-08 18:04:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489297478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:53,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448961021] [2024-11-08 18:04:53,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:04:53,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:53,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:53,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:53,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:04:53,622 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:04:53,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:53,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 18:04:53,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:53,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:04:54,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:04:54,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 18:04:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:04:54,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:04:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448961021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:54,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:54,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 28 [2024-11-08 18:04:54,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879626879] [2024-11-08 18:04:54,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:54,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:04:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:54,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:04:54,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:04:54,690 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 28 states have internal predecessors, (57), 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 18:04:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:55,757 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-08 18:04:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:04:55,759 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 28 states have internal predecessors, (57), 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 23 [2024-11-08 18:04:55,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:55,760 INFO L225 Difference]: With dead ends: 39 [2024-11-08 18:04:55,760 INFO L226 Difference]: Without dead ends: 35 [2024-11-08 18:04:55,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=212, Invalid=1510, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:04:55,762 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:55,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:04:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-08 18:04:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2024-11-08 18:04:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 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 18:04:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-08 18:04:55,775 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 23 [2024-11-08 18:04:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:55,776 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-08 18:04:55,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 28 states have internal predecessors, (57), 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 18:04:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-08 18:04:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 18:04:55,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:55,777 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:55,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:04:55,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:55,978 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:55,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1380390989, now seen corresponding path program 4 times [2024-11-08 18:04:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471926685] [2024-11-08 18:04:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:04:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:56,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471926685] [2024-11-08 18:04:56,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471926685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:56,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017798002] [2024-11-08 18:04:56,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:04:56,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:56,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:56,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:56,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:04:56,180 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:04:56,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:56,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:04:56,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:04:56,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:04:56,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017798002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:56,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:56,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-08 18:04:56,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908370867] [2024-11-08 18:04:56,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:56,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:04:56,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:56,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:04:56,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:04:56,456 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 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 18:04:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:56,854 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-11-08 18:04:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 18:04:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 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 25 [2024-11-08 18:04:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:56,856 INFO L225 Difference]: With dead ends: 62 [2024-11-08 18:04:56,856 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 18:04:56,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2024-11-08 18:04:56,858 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:56,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 48 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:04:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 18:04:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2024-11-08 18:04:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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 18:04:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-08 18:04:56,872 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2024-11-08 18:04:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:56,873 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-08 18:04:56,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 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 18:04:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-08 18:04:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 18:04:56,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:56,875 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:56,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:04:57,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 18:04:57,079 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:57,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash -751100526, now seen corresponding path program 5 times [2024-11-08 18:04:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:57,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086155343] [2024-11-08 18:04:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:04:57,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086155343] [2024-11-08 18:04:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086155343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492192903] [2024-11-08 18:04:57,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:04:57,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:57,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:57,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:04:57,352 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 18:04:57,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:57,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:04:57,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:04:57,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:04:57,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492192903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:57,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-08 18:04:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758582716] [2024-11-08 18:04:57,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:57,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:04:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:04:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:04:57,627 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 18:04:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:57,845 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-11-08 18:04:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:04:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 27 [2024-11-08 18:04:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:57,847 INFO L225 Difference]: With dead ends: 44 [2024-11-08 18:04:57,851 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 18:04:57,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:04:57,852 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:57,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 44 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 18:04:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-08 18:04:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 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 18:04:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-08 18:04:57,862 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2024-11-08 18:04:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:57,864 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-08 18:04:57,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 18:04:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-08 18:04:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 18:04:57,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:57,865 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:57,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:04:58,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 18:04:58,069 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:58,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:58,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1821598313, now seen corresponding path program 6 times [2024-11-08 18:04:58,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:58,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921543781] [2024-11-08 18:04:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:58,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:59,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:59,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921543781] [2024-11-08 18:04:59,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921543781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018978133] [2024-11-08 18:04:59,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:04:59,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:59,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:59,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:59,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:04:59,330 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 18:04:59,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:59,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 18:04:59,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:59,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:04:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:04:59,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:04:59,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 39 [2024-11-08 18:05:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:00,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018978133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:00,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 14] total 39 [2024-11-08 18:05:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648834031] [2024-11-08 18:05:00,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:00,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 18:05:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 18:05:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 18:05:00,690 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 39 states have internal predecessors, (73), 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 18:05:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:02,398 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2024-11-08 18:05:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:05:02,400 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 39 states have internal predecessors, (73), 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 29 [2024-11-08 18:05:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:02,403 INFO L225 Difference]: With dead ends: 47 [2024-11-08 18:05:02,403 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 18:05:02,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=336, Invalid=3086, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:05:02,406 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:02,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 68 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:05:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 18:05:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-08 18:05:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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 18:05:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-08 18:05:02,422 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 29 [2024-11-08 18:05:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:02,423 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-08 18:05:02,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 39 states have internal predecessors, (73), 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 18:05:02,423 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-08 18:05:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 18:05:02,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:02,427 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:02,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:02,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:02,628 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:02,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash 222179420, now seen corresponding path program 7 times [2024-11-08 18:05:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:02,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762602770] [2024-11-08 18:05:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:02,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:05:02,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:02,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762602770] [2024-11-08 18:05:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762602770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:02,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395825446] [2024-11-08 18:05:02,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:05:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:02,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:02,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:05:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:02,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:05:02,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:05:03,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:05:03,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395825446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:03,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:03,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 18:05:03,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620469071] [2024-11-08 18:05:03,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:03,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:05:03,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:03,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:05:03,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:05:03,122 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 18:05:03,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:03,267 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2024-11-08 18:05:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:05:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 31 [2024-11-08 18:05:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:03,268 INFO L225 Difference]: With dead ends: 68 [2024-11-08 18:05:03,268 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 18:05:03,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:05:03,269 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:03,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 32 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:05:03,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 18:05:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2024-11-08 18:05:03,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 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 18:05:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-08 18:05:03,287 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 31 [2024-11-08 18:05:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:03,288 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-08 18:05:03,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 18:05:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-08 18:05:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 18:05:03,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:03,289 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:03,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:05:03,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:03,490 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:03,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1281239167, now seen corresponding path program 8 times [2024-11-08 18:05:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463161350] [2024-11-08 18:05:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:05:03,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:03,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463161350] [2024-11-08 18:05:03,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463161350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:03,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116568017] [2024-11-08 18:05:03,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:05:03,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:03,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:03,671 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:03,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:05:03,747 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:05:03,747 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:03,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:05:03,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:05:03,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:05:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116568017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:04,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:04,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 18:05:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360463214] [2024-11-08 18:05:04,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:04,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:05:04,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:05:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:05:04,014 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 18:05:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:04,152 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-08 18:05:04,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:05:04,152 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 33 [2024-11-08 18:05:04,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:04,153 INFO L225 Difference]: With dead ends: 52 [2024-11-08 18:05:04,153 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 18:05:04,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:05:04,154 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:04,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 32 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:05:04,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 18:05:04,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-08 18:05:04,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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 18:05:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-08 18:05:04,164 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 33 [2024-11-08 18:05:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:04,164 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-08 18:05:04,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 18:05:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-08 18:05:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 18:05:04,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:04,166 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:04,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:05:04,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:05:04,366 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:04,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:04,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1180524070, now seen corresponding path program 9 times [2024-11-08 18:05:04,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:04,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709795277] [2024-11-08 18:05:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:04,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709795277] [2024-11-08 18:05:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709795277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378757382] [2024-11-08 18:05:05,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:05:05,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:05,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:05,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:05:05,805 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 18:05:05,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:05,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 18:05:05,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:06,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:06,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-08 18:05:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:05:06,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:07,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:07,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-08 18:05:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:05:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378757382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:07,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 47 [2024-11-08 18:05:07,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968246546] [2024-11-08 18:05:07,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:07,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 18:05:07,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 18:05:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:05:07,542 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 47 states, 47 states have (on average 1.851063829787234) internal successors, (87), 47 states have internal predecessors, (87), 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 18:05:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:09,194 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2024-11-08 18:05:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:05:09,195 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.851063829787234) internal successors, (87), 47 states have internal predecessors, (87), 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 35 [2024-11-08 18:05:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:09,196 INFO L225 Difference]: With dead ends: 64 [2024-11-08 18:05:09,196 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 18:05:09,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=457, Invalid=3965, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 18:05:09,198 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:09,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 79 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:05:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 18:05:09,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2024-11-08 18:05:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 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 18:05:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-11-08 18:05:09,211 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 35 [2024-11-08 18:05:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:09,212 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-11-08 18:05:09,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.851063829787234) internal successors, (87), 47 states have internal predecessors, (87), 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 18:05:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-11-08 18:05:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 18:05:09,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:09,213 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:09,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:09,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:09,417 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:09,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash -669441749, now seen corresponding path program 10 times [2024-11-08 18:05:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389141277] [2024-11-08 18:05:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:05:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389141277] [2024-11-08 18:05:09,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389141277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850063623] [2024-11-08 18:05:09,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:05:09,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:09,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:09,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:05:09,684 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:05:09,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:09,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:05:09,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:05:09,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 18:05:10,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850063623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:10,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-08 18:05:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498673022] [2024-11-08 18:05:10,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:10,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:05:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:05:10,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:05:10,123 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 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 18:05:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:10,670 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2024-11-08 18:05:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 18:05:10,671 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 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 37 [2024-11-08 18:05:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:10,671 INFO L225 Difference]: With dead ends: 90 [2024-11-08 18:05:10,671 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 18:05:10,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=1913, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 18:05:10,673 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:10,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 55 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:05:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 18:05:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2024-11-08 18:05:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 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 18:05:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-11-08 18:05:10,689 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 37 [2024-11-08 18:05:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:10,689 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-11-08 18:05:10,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 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 18:05:10,689 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-11-08 18:05:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 18:05:10,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:10,690 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:10,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 18:05:10,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:05:10,891 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:10,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:10,891 INFO L85 PathProgramCache]: Analyzing trace with hash -27080976, now seen corresponding path program 11 times [2024-11-08 18:05:10,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:10,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635182269] [2024-11-08 18:05:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:11,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:11,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635182269] [2024-11-08 18:05:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635182269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980303348] [2024-11-08 18:05:11,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:05:11,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:11,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:11,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:11,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:05:11,194 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 18:05:11,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:11,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:05:11,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:11,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:11,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980303348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:11,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:11,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-08 18:05:11,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345039478] [2024-11-08 18:05:11,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:11,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:05:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:11,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:05:11,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:05:11,634 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 18:05:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:11,967 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2024-11-08 18:05:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:05:11,968 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 39 [2024-11-08 18:05:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:11,968 INFO L225 Difference]: With dead ends: 60 [2024-11-08 18:05:11,968 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 18:05:11,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:05:11,970 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:11,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 52 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:05:11,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 18:05:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-08 18:05:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 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 18:05:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-08 18:05:11,985 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 39 [2024-11-08 18:05:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:11,985 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-08 18:05:11,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 18:05:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-08 18:05:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 18:05:11,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:11,987 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:12,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 18:05:12,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:05:12,187 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:12,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash -807823499, now seen corresponding path program 12 times [2024-11-08 18:05:12,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:12,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679846670] [2024-11-08 18:05:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:12,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:14,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679846670] [2024-11-08 18:05:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679846670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:14,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018268161] [2024-11-08 18:05:14,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:05:14,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:14,012 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:14,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 18:05:14,099 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 18:05:14,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:14,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-08 18:05:14,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:14,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:05:14,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:14,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 18:05:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 18:05:15,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 18:05:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018268161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:16,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:16,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 18] total 53 [2024-11-08 18:05:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324707702] [2024-11-08 18:05:16,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:16,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 18:05:16,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 18:05:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2564, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 18:05:16,065 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 53 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 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 18:05:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:18,652 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2024-11-08 18:05:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 18:05:18,653 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 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 18:05:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:18,653 INFO L225 Difference]: With dead ends: 63 [2024-11-08 18:05:18,654 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 18:05:18,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=459, Invalid=6021, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 18:05:18,656 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:18,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 96 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:05:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 18:05:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2024-11-08 18:05:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 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 18:05:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2024-11-08 18:05:18,675 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 41 [2024-11-08 18:05:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:18,676 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2024-11-08 18:05:18,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 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 18:05:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2024-11-08 18:05:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 18:05:18,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:18,677 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:18,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:18,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:18,878 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:18,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash 517888698, now seen corresponding path program 13 times [2024-11-08 18:05:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185222380] [2024-11-08 18:05:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:19,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185222380] [2024-11-08 18:05:19,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185222380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:19,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340870342] [2024-11-08 18:05:19,140 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:05:19,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:19,143 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:19,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 18:05:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:19,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:05:19,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:19,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340870342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:19,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 18:05:19,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193685756] [2024-11-08 18:05:19,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:19,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:05:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:19,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:05:19,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:05:19,582 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 18:05:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:19,793 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2024-11-08 18:05:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:05:19,794 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 18:05:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:19,795 INFO L225 Difference]: With dead ends: 92 [2024-11-08 18:05:19,795 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 18:05:19,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:05:19,796 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:19,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 50 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:05:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 18:05:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-08 18:05:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 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 18:05:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2024-11-08 18:05:19,814 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 43 [2024-11-08 18:05:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:19,814 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2024-11-08 18:05:19,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 18:05:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2024-11-08 18:05:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 18:05:19,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:19,816 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:19,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 18:05:20,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:20,021 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:20,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 988770911, now seen corresponding path program 14 times [2024-11-08 18:05:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:20,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930877822] [2024-11-08 18:05:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 18:05:20,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930877822] [2024-11-08 18:05:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930877822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:20,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352609145] [2024-11-08 18:05:20,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:05:20,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:20,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:20,331 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:20,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 18:05:20,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:05:20,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:20,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:05:20,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 18:05:20,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 18:05:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352609145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:20,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 18:05:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140540162] [2024-11-08 18:05:20,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:20,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:05:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:05:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:05:20,826 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 18:05:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:21,049 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2024-11-08 18:05:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:05:21,050 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 18:05:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:21,051 INFO L225 Difference]: With dead ends: 68 [2024-11-08 18:05:21,051 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 18:05:21,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:05:21,052 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:21,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 41 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:05:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 18:05:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-08 18:05:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 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 18:05:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-08 18:05:21,068 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2024-11-08 18:05:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:21,068 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-08 18:05:21,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 18:05:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-08 18:05:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 18:05:21,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:21,070 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:21,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 18:05:21,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:05:21,275 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:21,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash 816822660, now seen corresponding path program 15 times [2024-11-08 18:05:21,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:21,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418191866] [2024-11-08 18:05:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:21,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:23,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:23,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418191866] [2024-11-08 18:05:23,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418191866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881093080] [2024-11-08 18:05:23,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:05:23,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:23,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:23,432 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:23,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 18:05:23,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 18:05:23,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:23,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-08 18:05:23,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:23,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:05:24,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:24,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:24,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:24,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 46 treesize of output 59 [2024-11-08 18:05:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 18:05:24,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:05:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881093080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:26,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:26,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 23] total 63 [2024-11-08 18:05:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695173861] [2024-11-08 18:05:26,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:26,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 18:05:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:26,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 18:05:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=3569, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 18:05:26,787 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 63 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 63 states have internal predecessors, (119), 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 18:05:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:30,669 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2024-11-08 18:05:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:05:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 63 states have internal predecessors, (119), 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 18:05:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:30,670 INFO L225 Difference]: With dead ends: 71 [2024-11-08 18:05:30,671 INFO L226 Difference]: Without dead ends: 67 [2024-11-08 18:05:30,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=745, Invalid=8375, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 18:05:30,673 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:30,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 111 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:05:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-08 18:05:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 53. [2024-11-08 18:05:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 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 18:05:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2024-11-08 18:05:30,696 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 47 [2024-11-08 18:05:30,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:30,696 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2024-11-08 18:05:30,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 63 states have internal predecessors, (119), 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 18:05:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2024-11-08 18:05:30,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:05:30,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:30,697 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:30,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 18:05:30,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:05:30,898 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:30,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1174385399, now seen corresponding path program 16 times [2024-11-08 18:05:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16049158] [2024-11-08 18:05:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 18:05:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16049158] [2024-11-08 18:05:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16049158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959639948] [2024-11-08 18:05:31,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:05:31,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:31,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:31,207 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:31,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 18:05:31,298 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:05:31,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:31,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:05:31,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 18:05:31,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 18:05:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959639948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:31,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-08 18:05:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340809777] [2024-11-08 18:05:31,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:31,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 18:05:31,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:31,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 18:05:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 18:05:31,922 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 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 18:05:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:32,839 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2024-11-08 18:05:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 18:05:32,840 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 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 49 [2024-11-08 18:05:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:32,841 INFO L225 Difference]: With dead ends: 118 [2024-11-08 18:05:32,841 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 18:05:32,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=615, Invalid=3675, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 18:05:32,843 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 37 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:32,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 76 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:05:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 18:05:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2024-11-08 18:05:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 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 18:05:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2024-11-08 18:05:32,885 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 49 [2024-11-08 18:05:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:32,886 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2024-11-08 18:05:32,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 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 18:05:32,889 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2024-11-08 18:05:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 18:05:32,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:32,891 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:32,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 18:05:33,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:05:33,092 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:33,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1971137714, now seen corresponding path program 17 times [2024-11-08 18:05:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404783104] [2024-11-08 18:05:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 18:05:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404783104] [2024-11-08 18:05:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404783104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972359249] [2024-11-08 18:05:33,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:05:33,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:33,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:33,413 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:33,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 18:05:33,606 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 18:05:33,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:33,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:05:33,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 18:05:33,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 18:05:34,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972359249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:34,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:34,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-08 18:05:34,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620642592] [2024-11-08 18:05:34,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:34,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 18:05:34,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 18:05:34,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1265, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 18:05:34,210 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 states have internal predecessors, (85), 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 18:05:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:34,581 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2024-11-08 18:05:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:05:34,582 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 states have internal predecessors, (85), 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 51 [2024-11-08 18:05:34,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:34,583 INFO L225 Difference]: With dead ends: 76 [2024-11-08 18:05:34,583 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 18:05:34,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=318, Invalid=1844, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:05:34,584 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 64 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:34,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 69 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:05:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 18:05:34,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-08 18:05:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 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 18:05:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-08 18:05:34,599 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 51 [2024-11-08 18:05:34,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:34,600 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-08 18:05:34,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 states have internal predecessors, (85), 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 18:05:34,600 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-08 18:05:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 18:05:34,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:34,601 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:34,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:34,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:34,801 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:34,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1612330067, now seen corresponding path program 18 times [2024-11-08 18:05:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:34,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98878902] [2024-11-08 18:05:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98878902] [2024-11-08 18:05:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98878902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325536857] [2024-11-08 18:05:37,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:05:37,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:37,171 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:37,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 18:05:37,308 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-08 18:05:37,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:37,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-08 18:05:37,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:38,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:38,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:38,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 72 treesize of output 135 [2024-11-08 18:05:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:39,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:40,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:40,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-08 18:05:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 18:05:41,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325536857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:41,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:41,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30, 22] total 67 [2024-11-08 18:05:41,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029865855] [2024-11-08 18:05:41,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:41,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 18:05:41,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 18:05:41,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=4058, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 18:05:41,190 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 67 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 67 states have internal predecessors, (128), 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 18:05:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:47,085 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2024-11-08 18:05:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-08 18:05:47,086 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 67 states have internal predecessors, (128), 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 53 [2024-11-08 18:05:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:47,086 INFO L225 Difference]: With dead ends: 122 [2024-11-08 18:05:47,086 INFO L226 Difference]: Without dead ends: 117 [2024-11-08 18:05:47,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2166 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=983, Invalid=10147, Unknown=0, NotChecked=0, Total=11130 [2024-11-08 18:05:47,089 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:47,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 120 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 18:05:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-08 18:05:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 84. [2024-11-08 18:05:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.072289156626506) internal successors, (89), 83 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 18:05:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2024-11-08 18:05:47,136 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 53 [2024-11-08 18:05:47,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:47,136 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2024-11-08 18:05:47,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 67 states have internal predecessors, (128), 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 18:05:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2024-11-08 18:05:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 18:05:47,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:47,137 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:47,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:47,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-08 18:05:47,338 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:47,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 761096216, now seen corresponding path program 19 times [2024-11-08 18:05:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:47,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715043310] [2024-11-08 18:05:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:47,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 18:05:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715043310] [2024-11-08 18:05:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715043310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697187957] [2024-11-08 18:05:47,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:05:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:47,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:47,699 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:47,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 18:05:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:47,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:05:47,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 18:05:48,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 18:05:48,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697187957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:48,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:48,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-08 18:05:48,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297398797] [2024-11-08 18:05:48,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:48,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:05:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:05:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:05:48,255 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 18:05:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:48,521 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2024-11-08 18:05:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:05:48,522 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 55 [2024-11-08 18:05:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:48,523 INFO L225 Difference]: With dead ends: 116 [2024-11-08 18:05:48,523 INFO L226 Difference]: Without dead ends: 62 [2024-11-08 18:05:48,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:05:48,524 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:48,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:05:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-08 18:05:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-08 18:05:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-11-08 18:05:48,552 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 55 [2024-11-08 18:05:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:48,552 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-11-08 18:05:48,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 18:05:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-11-08 18:05:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:05:48,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:48,553 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:48,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:48,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 18:05:48,753 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:48,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash 938946621, now seen corresponding path program 20 times [2024-11-08 18:05:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231618342] [2024-11-08 18:05:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:05:49,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:49,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231618342] [2024-11-08 18:05:49,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231618342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:49,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050405556] [2024-11-08 18:05:49,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:05:49,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:49,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:49,185 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:49,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 18:05:49,343 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:05:49,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:49,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:05:49,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:05:49,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:05:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050405556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:49,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-08 18:05:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120164867] [2024-11-08 18:05:49,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:49,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:05:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:05:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:05:49,836 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 18:05:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:50,050 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2024-11-08 18:05:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:05:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 57 [2024-11-08 18:05:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:50,052 INFO L225 Difference]: With dead ends: 84 [2024-11-08 18:05:50,052 INFO L226 Difference]: Without dead ends: 62 [2024-11-08 18:05:50,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 88 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2024-11-08 18:05:50,053 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:50,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 40 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:05:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-08 18:05:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-08 18:05:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 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 18:05:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-08 18:05:50,075 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 57 [2024-11-08 18:05:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:50,076 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-08 18:05:50,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 18:05:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-08 18:05:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 18:05:50,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:50,077 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:50,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:50,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 18:05:50,277 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:50,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash 180320226, now seen corresponding path program 21 times [2024-11-08 18:05:50,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:50,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114607121] [2024-11-08 18:05:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114607121] [2024-11-08 18:05:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114607121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18141803] [2024-11-08 18:05:53,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:05:53,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:53,619 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:53,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 18:05:53,754 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 18:05:53,754 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:53,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-08 18:05:53,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:53,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:05:55,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:55,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:55,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:55,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:55,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:55,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:55,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:55,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 58 treesize of output 93 [2024-11-08 18:05:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:55,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 18:05:58,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18141803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:58,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 24] total 74 [2024-11-08 18:05:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798123305] [2024-11-08 18:05:58,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:58,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 18:05:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 18:05:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=4958, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 18:05:58,187 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 74 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 74 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 18:06:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:04,681 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2024-11-08 18:06:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 18:06:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 74 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 59 [2024-11-08 18:06:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:04,683 INFO L225 Difference]: With dead ends: 129 [2024-11-08 18:06:04,683 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 18:06:04,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=980, Invalid=11230, Unknown=0, NotChecked=0, Total=12210 [2024-11-08 18:06:04,685 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:04,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 128 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 18:06:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 18:06:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2024-11-08 18:06:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0689655172413792) internal successors, (93), 87 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 18:06:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2024-11-08 18:06:04,728 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 59 [2024-11-08 18:06:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:04,729 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2024-11-08 18:06:04,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 74 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 18:06:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2024-11-08 18:06:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:06:04,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:04,730 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:04,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:04,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:04,931 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:04,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1488970777, now seen corresponding path program 22 times [2024-11-08 18:06:04,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:04,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113593194] [2024-11-08 18:06:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:06:05,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:05,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113593194] [2024-11-08 18:06:05,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113593194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:05,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377098011] [2024-11-08 18:06:05,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:06:05,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:05,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:05,342 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:05,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 18:06:05,456 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:06:05,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:05,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 18:06:05,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:06:05,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:06:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377098011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:06,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:06,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-11-08 18:06:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562603460] [2024-11-08 18:06:06,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:06,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 18:06:06,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:06,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 18:06:06,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=2029, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:06:06,396 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 18:06:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:07,688 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2024-11-08 18:06:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 18:06:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 61 [2024-11-08 18:06:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:07,690 INFO L225 Difference]: With dead ends: 146 [2024-11-08 18:06:07,690 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 18:06:07,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 84 SyntacticMatches, 10 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=967, Invalid=6005, Unknown=0, NotChecked=0, Total=6972 [2024-11-08 18:06:07,691 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:07,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 77 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:06:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 18:06:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2024-11-08 18:06:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 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 18:06:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2024-11-08 18:06:07,726 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 61 [2024-11-08 18:06:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:07,727 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2024-11-08 18:06:07,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 18:06:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2024-11-08 18:06:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:06:07,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:07,728 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:07,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-08 18:06:07,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 18:06:07,928 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:07,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1006714196, now seen corresponding path program 23 times [2024-11-08 18:06:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341753963] [2024-11-08 18:06:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 18:06:08,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341753963] [2024-11-08 18:06:08,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341753963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267278065] [2024-11-08 18:06:08,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:06:08,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:08,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:08,386 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:08,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 18:06:08,733 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-08 18:06:08,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:08,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 18:06:08,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 18:06:09,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 18:06:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267278065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:09,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-08 18:06:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49587083] [2024-11-08 18:06:09,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:09,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 18:06:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 18:06:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:06:09,297 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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 18:06:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:09,571 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2024-11-08 18:06:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:06:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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 63 [2024-11-08 18:06:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:09,573 INFO L225 Difference]: With dead ends: 92 [2024-11-08 18:06:09,573 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 18:06:09,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 97 SyntacticMatches, 18 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 18:06:09,574 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 64 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:09,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 37 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:06:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 18:06:09,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-08 18:06:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 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 18:06:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-11-08 18:06:09,614 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 63 [2024-11-08 18:06:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:09,614 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-11-08 18:06:09,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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 18:06:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-11-08 18:06:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:06:09,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:09,615 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:09,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:09,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 18:06:09,816 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:09,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash 296875057, now seen corresponding path program 24 times [2024-11-08 18:06:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:09,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194798887] [2024-11-08 18:06:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:06:13,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194798887] [2024-11-08 18:06:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194798887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514257884] [2024-11-08 18:06:13,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:06:13,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:13,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:13,767 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:13,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 18:06:14,076 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-08 18:06:14,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:14,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-08 18:06:14,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:16,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:16,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:06:16,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 39 [2024-11-08 18:06:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 3 proven. 234 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:06:16,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:20,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:06:20,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 120 treesize of output 453 [2024-11-08 18:06:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 18:06:24,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514257884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:24,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:24,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33, 26] total 81 [2024-11-08 18:06:24,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054937749] [2024-11-08 18:06:24,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:24,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-08 18:06:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-08 18:06:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=6137, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 18:06:24,851 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 81 states, 81 states have (on average 1.9382716049382716) internal successors, (157), 81 states have internal predecessors, (157), 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 18:06:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:32,578 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2024-11-08 18:06:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 18:06:32,579 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.9382716049382716) internal successors, (157), 81 states have internal predecessors, (157), 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 65 [2024-11-08 18:06:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:32,580 INFO L225 Difference]: With dead ends: 95 [2024-11-08 18:06:32,580 INFO L226 Difference]: Without dead ends: 91 [2024-11-08 18:06:32,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2581 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=758, Invalid=14248, Unknown=0, NotChecked=0, Total=15006 [2024-11-08 18:06:32,582 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:32,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 140 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3199 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 18:06:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-08 18:06:32,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2024-11-08 18:06:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 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 18:06:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2024-11-08 18:06:32,640 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 65 [2024-11-08 18:06:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:32,640 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2024-11-08 18:06:32,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.9382716049382716) internal successors, (157), 81 states have internal predecessors, (157), 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 18:06:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2024-11-08 18:06:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:06:32,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:32,641 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:32,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-08 18:06:32,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 18:06:32,842 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:32,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:32,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1084303242, now seen corresponding path program 25 times [2024-11-08 18:06:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501357539] [2024-11-08 18:06:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 18:06:33,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501357539] [2024-11-08 18:06:33,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501357539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:33,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270756341] [2024-11-08 18:06:33,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:06:33,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:33,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:33,319 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:33,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 18:06:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:33,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:06:33,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 18:06:33,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 18:06:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270756341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:34,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:34,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 18:06:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572787632] [2024-11-08 18:06:34,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:34,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:06:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:34,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:06:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:06:34,230 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 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 18:06:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:34,662 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2024-11-08 18:06:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:06:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 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 67 [2024-11-08 18:06:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:34,664 INFO L225 Difference]: With dead ends: 140 [2024-11-08 18:06:34,664 INFO L226 Difference]: Without dead ends: 74 [2024-11-08 18:06:34,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:06:34,665 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:34,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:06:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-08 18:06:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-08 18:06:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 states have internal predecessors, (76), 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 18:06:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2024-11-08 18:06:34,736 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 67 [2024-11-08 18:06:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:34,737 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2024-11-08 18:06:34,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 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 18:06:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2024-11-08 18:06:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 18:06:34,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:34,738 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:34,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 18:06:34,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 18:06:34,939 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:34,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2105765605, now seen corresponding path program 26 times [2024-11-08 18:06:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:34,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408796140] [2024-11-08 18:06:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:06:35,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:35,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408796140] [2024-11-08 18:06:35,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408796140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:35,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445398262] [2024-11-08 18:06:35,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:06:35,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:35,496 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:35,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 18:06:35,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:06:35,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:35,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:06:35,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:06:36,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:06:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445398262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:36,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 18:06:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765316127] [2024-11-08 18:06:36,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:36,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:06:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:06:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:06:36,346 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 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 18:06:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:36,656 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2024-11-08 18:06:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:06:36,656 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 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 69 [2024-11-08 18:06:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:36,657 INFO L225 Difference]: With dead ends: 100 [2024-11-08 18:06:36,657 INFO L226 Difference]: Without dead ends: 74 [2024-11-08 18:06:36,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 106 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 18:06:36,658 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:36,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 40 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:06:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-08 18:06:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-08 18:06:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 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 18:06:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-11-08 18:06:36,710 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 69 [2024-11-08 18:06:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:36,711 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-11-08 18:06:36,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 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 18:06:36,711 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-11-08 18:06:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 18:06:36,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:36,712 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:36,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 18:06:36,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 18:06:36,912 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:36,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash -915400384, now seen corresponding path program 27 times [2024-11-08 18:06:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:36,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34284230] [2024-11-08 18:06:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:06:41,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34284230] [2024-11-08 18:06:41,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34284230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963363374] [2024-11-08 18:06:41,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:06:41,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:41,614 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:41,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 18:06:41,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 18:06:41,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:41,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-08 18:06:41,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:41,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:06:42,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:06:42,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:06:42,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:06:42,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:06:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:44,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:06:44,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 92 treesize of output 165 [2024-11-08 18:06:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 18:06:45,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 18:06:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963363374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:49,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:49,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 29, 28] total 88 [2024-11-08 18:06:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131698454] [2024-11-08 18:06:49,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:49,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-08 18:06:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:49,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-08 18:06:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=7233, Unknown=0, NotChecked=0, Total=7656 [2024-11-08 18:06:49,784 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 88 states, 88 states have (on average 1.9431818181818181) internal successors, (171), 88 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 18:07:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:00,534 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2024-11-08 18:07:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 18:07:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.9431818181818181) internal successors, (171), 88 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 71 [2024-11-08 18:07:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:00,535 INFO L225 Difference]: With dead ends: 103 [2024-11-08 18:07:00,535 INFO L226 Difference]: Without dead ends: 99 [2024-11-08 18:07:00,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=919, Invalid=16903, Unknown=0, NotChecked=0, Total=17822 [2024-11-08 18:07:00,537 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 4027 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 4052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:00,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 158 Invalid, 4052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 4027 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 18:07:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-08 18:07:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2024-11-08 18:07:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 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 18:07:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2024-11-08 18:07:00,589 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 71 [2024-11-08 18:07:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:00,590 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2024-11-08 18:07:00,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.9431818181818181) internal successors, (171), 88 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 18:07:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2024-11-08 18:07:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 18:07:00,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:00,591 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:00,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:00,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 18:07:00,791 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:00,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:00,792 INFO L85 PathProgramCache]: Analyzing trace with hash -170127931, now seen corresponding path program 28 times [2024-11-08 18:07:00,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:00,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513875688] [2024-11-08 18:07:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:07:01,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:01,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513875688] [2024-11-08 18:07:01,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513875688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:01,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827767524] [2024-11-08 18:07:01,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:07:01,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:01,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:01,350 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:01,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 18:07:01,508 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:07:01,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:01,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 18:07:01,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:07:02,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:07:02,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827767524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:02,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:02,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2024-11-08 18:07:02,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219192026] [2024-11-08 18:07:02,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:02,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 18:07:02,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:02,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 18:07:02,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2963, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:07:02,953 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 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 18:07:04,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:04,689 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2024-11-08 18:07:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-08 18:07:04,690 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 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 73 [2024-11-08 18:07:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:04,691 INFO L225 Difference]: With dead ends: 174 [2024-11-08 18:07:04,691 INFO L226 Difference]: Without dead ends: 102 [2024-11-08 18:07:04,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 100 SyntacticMatches, 12 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3441 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1399, Invalid=8903, Unknown=0, NotChecked=0, Total=10302 [2024-11-08 18:07:04,694 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:04,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 68 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:07:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-08 18:07:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 76. [2024-11-08 18:07:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 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 18:07:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2024-11-08 18:07:04,746 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 73 [2024-11-08 18:07:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:04,747 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2024-11-08 18:07:04,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 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 18:07:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2024-11-08 18:07:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 18:07:04,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:04,748 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:04,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:04,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:04,948 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:04,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -302377718, now seen corresponding path program 29 times [2024-11-08 18:07:04,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:04,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808659634] [2024-11-08 18:07:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:04,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 81 proven. 140 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:07:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808659634] [2024-11-08 18:07:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808659634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885370931] [2024-11-08 18:07:05,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:07:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:05,450 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:05,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 18:07:05,854 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-08 18:07:05,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:05,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 18:07:05,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:07:06,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:07:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885370931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:07,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:07,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2024-11-08 18:07:07,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762736465] [2024-11-08 18:07:07,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:07,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 18:07:07,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:07,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 18:07:07,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=2953, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:07:07,286 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 18:07:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:08,008 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2024-11-08 18:07:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 18:07:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 75 [2024-11-08 18:07:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:08,010 INFO L225 Difference]: With dead ends: 108 [2024-11-08 18:07:08,010 INFO L226 Difference]: Without dead ends: 80 [2024-11-08 18:07:08,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=692, Invalid=4278, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 18:07:08,011 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 100 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:08,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 52 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:07:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-08 18:07:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-11-08 18:07:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 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 18:07:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-11-08 18:07:08,066 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 75 [2024-11-08 18:07:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:08,066 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-11-08 18:07:08,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 18:07:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-11-08 18:07:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 18:07:08,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:08,067 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:08,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:08,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:08,268 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:08,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash -119253233, now seen corresponding path program 30 times [2024-11-08 18:07:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855543929] [2024-11-08 18:07:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 25 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855543929] [2024-11-08 18:07:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855543929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545904952] [2024-11-08 18:07:15,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:07:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:15,196 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:15,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 18:07:15,681 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-08 18:07:15,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:15,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-08 18:07:15,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:15,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:07:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:19,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:07:19,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 84 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 146 treesize of output 381 [2024-11-08 18:07:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 11 proven. 242 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-08 18:07:20,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-08 18:07:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545904952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:25,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:25,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 31, 30] total 95 [2024-11-08 18:07:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490175041] [2024-11-08 18:07:25,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:25,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-08 18:07:25,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-08 18:07:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=8457, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 18:07:25,813 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 95 states, 95 states have (on average 1.9473684210526316) internal successors, (185), 95 states have internal predecessors, (185), 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 18:07:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:38,920 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2024-11-08 18:07:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-08 18:07:38,921 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.9473684210526316) internal successors, (185), 95 states have internal predecessors, (185), 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 77 [2024-11-08 18:07:38,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:38,921 INFO L225 Difference]: With dead ends: 110 [2024-11-08 18:07:38,921 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 18:07:38,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3874 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=1172, Invalid=20584, Unknown=0, NotChecked=0, Total=21756 [2024-11-08 18:07:38,923 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3868 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:38,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3868 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-08 18:07:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 18:07:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 83. [2024-11-08 18:07:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 states have internal predecessors, (86), 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 18:07:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2024-11-08 18:07:39,002 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 77 [2024-11-08 18:07:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:39,003 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2024-11-08 18:07:39,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.9473684210526316) internal successors, (185), 95 states have internal predecessors, (185), 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 18:07:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2024-11-08 18:07:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 18:07:39,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:39,004 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:39,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:39,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:39,205 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:39,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash -230282284, now seen corresponding path program 31 times [2024-11-08 18:07:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:39,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939321930] [2024-11-08 18:07:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:39,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:07:39,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:39,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939321930] [2024-11-08 18:07:39,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939321930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:39,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776382165] [2024-11-08 18:07:39,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:07:39,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:39,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:39,913 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:39,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 18:07:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:40,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 18:07:40,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:07:40,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:07:41,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776382165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:41,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:41,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-08 18:07:41,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724188183] [2024-11-08 18:07:41,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:41,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 18:07:41,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 18:07:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:07:41,045 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 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 18:07:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:41,472 INFO L93 Difference]: Finished difference Result 164 states and 170 transitions. [2024-11-08 18:07:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 18:07:41,473 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 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 79 [2024-11-08 18:07:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:41,474 INFO L225 Difference]: With dead ends: 164 [2024-11-08 18:07:41,474 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 18:07:41,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:07:41,475 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:41,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 38 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:07:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 18:07:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2024-11-08 18:07:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 84 states have internal predecessors, (88), 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 18:07:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-11-08 18:07:41,539 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 79 [2024-11-08 18:07:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:41,540 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-11-08 18:07:41,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 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 18:07:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-11-08 18:07:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-08 18:07:41,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:41,541 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:41,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-08 18:07:41,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:41,741 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:41,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash -654109447, now seen corresponding path program 32 times [2024-11-08 18:07:41,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:41,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056059900] [2024-11-08 18:07:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:41,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 100 proven. 165 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:07:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056059900] [2024-11-08 18:07:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056059900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806526046] [2024-11-08 18:07:42,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:07:42,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:42,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:42,293 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:42,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 18:07:42,476 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:07:42,476 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:42,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 18:07:42,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:07:42,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:07:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806526046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:43,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:43,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-08 18:07:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019813649] [2024-11-08 18:07:43,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:43,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 18:07:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 18:07:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:07:43,327 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 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 18:07:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:43,758 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2024-11-08 18:07:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 18:07:43,758 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 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 81 [2024-11-08 18:07:43,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:43,759 INFO L225 Difference]: With dead ends: 116 [2024-11-08 18:07:43,760 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 18:07:43,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 124 SyntacticMatches, 24 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=425, Invalid=1381, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 18:07:43,761 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 63 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:43,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 31 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:07:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 18:07:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-08 18:07:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 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 18:07:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-11-08 18:07:43,825 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 81 [2024-11-08 18:07:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:43,826 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-11-08 18:07:43,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 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 18:07:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-11-08 18:07:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 18:07:43,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:43,826 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:43,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:44,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-08 18:07:44,027 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:44,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1738203746, now seen corresponding path program 33 times [2024-11-08 18:07:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127275736] [2024-11-08 18:07:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 36 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:52,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127275736] [2024-11-08 18:07:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127275736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721576137] [2024-11-08 18:07:52,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:07:52,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:52,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:52,063 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:52,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-08 18:07:52,360 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-08 18:07:52,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:52,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-08 18:07:52,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:52,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:07:52,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:07:52,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:07:56,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:56,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:07:56,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 110 treesize of output 227 [2024-11-08 18:07:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 288 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-08 18:07:57,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 18:08:03,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721576137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:03,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 33, 38] total 108 [2024-11-08 18:08:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22022336] [2024-11-08 18:08:03,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:03,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-08 18:08:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-08 18:08:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=10878, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 18:08:03,992 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 108 states, 108 states have (on average 1.9351851851851851) internal successors, (209), 108 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 18:08:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:08:20,312 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2024-11-08 18:08:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-08 18:08:20,313 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.9351851851851851) internal successors, (209), 108 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) Word has length 83 [2024-11-08 18:08:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:08:20,314 INFO L225 Difference]: With dead ends: 118 [2024-11-08 18:08:20,314 INFO L226 Difference]: Without dead ends: 114 [2024-11-08 18:08:20,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=1712, Invalid=26344, Unknown=0, NotChecked=0, Total=28056 [2024-11-08 18:08:20,315 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4878 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 4921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:08:20,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 178 Invalid, 4921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4878 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-08 18:08:20,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-08 18:08:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2024-11-08 18:08:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 88 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 18:08:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-08 18:08:20,391 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 83 [2024-11-08 18:08:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:08:20,391 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-08 18:08:20,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.9351851851851851) internal successors, (209), 108 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 18:08:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-08 18:08:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 18:08:20,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:08:20,392 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:08:20,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-08 18:08:20,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 18:08:20,593 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:08:20,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:08:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2103991645, now seen corresponding path program 34 times [2024-11-08 18:08:20,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:08:20,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713445268] [2024-11-08 18:08:20,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:08:20,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:08:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 146 proven. 167 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:08:21,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713445268] [2024-11-08 18:08:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713445268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531769136] [2024-11-08 18:08:21,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:08:21,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:21,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:21,193 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:21,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-08 18:08:21,373 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:08:21,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:08:21,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:08:21,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:08:22,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:08:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531769136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:23,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 69 [2024-11-08 18:08:23,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913467510] [2024-11-08 18:08:23,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:23,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 18:08:23,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 18:08:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=4073, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 18:08:23,134 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 69 states, 69 states have (on average 2.130434782608696) internal successors, (147), 69 states have internal predecessors, (147), 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 18:08:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:08:25,605 INFO L93 Difference]: Finished difference Result 202 states and 209 transitions. [2024-11-08 18:08:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-08 18:08:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.130434782608696) internal successors, (147), 69 states have internal predecessors, (147), 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 85 [2024-11-08 18:08:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:08:25,607 INFO L225 Difference]: With dead ends: 202 [2024-11-08 18:08:25,607 INFO L226 Difference]: Without dead ends: 118 [2024-11-08 18:08:25,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 116 SyntacticMatches, 14 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4860 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1911, Invalid=12369, Unknown=0, NotChecked=0, Total=14280 [2024-11-08 18:08:25,608 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 53 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:08:25,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 84 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 18:08:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-08 18:08:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2024-11-08 18:08:25,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 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 18:08:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2024-11-08 18:08:25,690 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 85 [2024-11-08 18:08:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:08:25,690 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2024-11-08 18:08:25,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.130434782608696) internal successors, (147), 69 states have internal predecessors, (147), 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 18:08:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2024-11-08 18:08:25,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-08 18:08:25,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:08:25,691 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:08:25,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-08 18:08:25,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 18:08:25,892 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:08:25,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:08:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 576211560, now seen corresponding path program 35 times [2024-11-08 18:08:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:08:25,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626931494] [2024-11-08 18:08:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:08:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:08:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-08 18:08:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626931494] [2024-11-08 18:08:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626931494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392725372] [2024-11-08 18:08:26,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:08:26,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:26,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:26,616 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:26,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-08 18:08:27,161 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-08 18:08:27,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:08:27,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:08:27,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-08 18:08:28,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-08 18:08:28,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392725372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:28,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:28,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 69 [2024-11-08 18:08:28,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582754212] [2024-11-08 18:08:28,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:28,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 18:08:28,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 18:08:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=4061, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 18:08:28,973 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 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 18:08:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:08:29,987 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2024-11-08 18:08:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:08:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 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 87 [2024-11-08 18:08:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:08:29,989 INFO L225 Difference]: With dead ends: 124 [2024-11-08 18:08:29,989 INFO L226 Difference]: Without dead ends: 92 [2024-11-08 18:08:29,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=933, Invalid=5873, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 18:08:29,991 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 109 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:08:29,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 80 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:08:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-08 18:08:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-11-08 18:08:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 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 18:08:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-11-08 18:08:30,095 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 87 [2024-11-08 18:08:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:08:30,096 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-11-08 18:08:30,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 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 18:08:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-11-08 18:08:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-08 18:08:30,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:08:30,097 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:08:30,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-08 18:08:30,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:30,298 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:08:30,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:08:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1354030317, now seen corresponding path program 36 times [2024-11-08 18:08:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:08:30,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001284455] [2024-11-08 18:08:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:08:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:08:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 49 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:08:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001284455] [2024-11-08 18:08:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001284455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888844628] [2024-11-08 18:08:38,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:08:38,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:38,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:38,880 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:38,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-08 18:08:39,479 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-08 18:08:39,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:08:39,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-08 18:08:39,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:39,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:08:39,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:08:39,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:08:43,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:08:43,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:08:43,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:08:43,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:08:43,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 71 [2024-11-08 18:08:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 13 proven. 338 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-08 18:08:44,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-08 18:08:51,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888844628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:51,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:51,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 35, 38] total 113 [2024-11-08 18:08:51,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113743828] [2024-11-08 18:08:51,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:51,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-08 18:08:51,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-08 18:08:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=11908, Unknown=0, NotChecked=0, Total=12656 [2024-11-08 18:08:51,717 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 113 states, 113 states have (on average 1.920353982300885) internal successors, (217), 113 states have internal predecessors, (217), 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 18:09:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:06,277 INFO L93 Difference]: Finished difference Result 126 states and 129 transitions. [2024-11-08 18:09:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 18:09:06,278 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.920353982300885) internal successors, (217), 113 states have internal predecessors, (217), 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 18:09:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:06,279 INFO L225 Difference]: With dead ends: 126 [2024-11-08 18:09:06,279 INFO L226 Difference]: Without dead ends: 122 [2024-11-08 18:09:06,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5831 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=1798, Invalid=25262, Unknown=0, NotChecked=0, Total=27060 [2024-11-08 18:09:06,281 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 5575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:06,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 186 Invalid, 5575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-08 18:09:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-08 18:09:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 95. [2024-11-08 18:09:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 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 18:09:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2024-11-08 18:09:06,385 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 89 [2024-11-08 18:09:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:06,386 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2024-11-08 18:09:06,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.920353982300885) internal successors, (217), 113 states have internal predecessors, (217), 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 18:09:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2024-11-08 18:09:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 18:09:06,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:06,387 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:06,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-08 18:09:06,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-08 18:09:06,588 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:06,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1513546290, now seen corresponding path program 37 times [2024-11-08 18:09:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845745163] [2024-11-08 18:09:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 171 proven. 194 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-08 18:09:07,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845745163] [2024-11-08 18:09:07,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845745163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875420069] [2024-11-08 18:09:07,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:09:07,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:07,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:07,175 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:07,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-08 18:09:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:07,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 18:09:07,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-08 18:09:07,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-08 18:09:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875420069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:08,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:08,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-08 18:09:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513015238] [2024-11-08 18:09:08,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:08,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 18:09:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 18:09:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:09:08,547 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 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 18:09:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:09,142 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2024-11-08 18:09:09,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 18:09:09,143 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 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 18:09:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:09,144 INFO L225 Difference]: With dead ends: 188 [2024-11-08 18:09:09,144 INFO L226 Difference]: Without dead ends: 98 [2024-11-08 18:09:09,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 139 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:09:09,145 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:09,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 44 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:09:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-08 18:09:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2024-11-08 18:09:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 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 18:09:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2024-11-08 18:09:09,251 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 91 [2024-11-08 18:09:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:09,251 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2024-11-08 18:09:09,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 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 18:09:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2024-11-08 18:09:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 18:09:09,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:09,252 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:09,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-08 18:09:09,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 18:09:09,453 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:09,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1060226089, now seen corresponding path program 38 times [2024-11-08 18:09:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:09,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635450814] [2024-11-08 18:09:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:09,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 144 proven. 221 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-08 18:09:10,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635450814] [2024-11-08 18:09:10,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635450814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116145172] [2024-11-08 18:09:10,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:09:10,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:10,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:10,193 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:10,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-08 18:09:10,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:09:10,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:09:10,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 18:09:10,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-08 18:09:11,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-08 18:09:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116145172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:11,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:11,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-08 18:09:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571575276] [2024-11-08 18:09:11,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:11,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 18:09:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 18:09:11,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:09:11,583 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 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 18:09:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:12,117 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2024-11-08 18:09:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 18:09:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 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 18:09:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:12,119 INFO L225 Difference]: With dead ends: 132 [2024-11-08 18:09:12,119 INFO L226 Difference]: Without dead ends: 98 [2024-11-08 18:09:12,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 142 SyntacticMatches, 28 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=549, Invalid=1803, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:09:12,120 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 61 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:12,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 38 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:09:12,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-08 18:09:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-08 18:09:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 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 18:09:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-11-08 18:09:12,221 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 93 [2024-11-08 18:09:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:12,221 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-11-08 18:09:12,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 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 18:09:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-11-08 18:09:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 18:09:12,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:12,222 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:12,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-08 18:09:12,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-08 18:09:12,422 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:12,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1174272772, now seen corresponding path program 39 times [2024-11-08 18:09:12,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:12,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115224636] [2024-11-08 18:09:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 81 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115224636] [2024-11-08 18:09:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115224636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153747794] [2024-11-08 18:09:20,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:09:20,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:20,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:20,555 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:20,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-08 18:09:20,898 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-08 18:09:20,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:09:20,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-08 18:09:20,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:21,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:09:26,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:09:26,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:09:26,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 100 treesize of output 243 [2024-11-08 18:09:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:27,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-08 18:09:34,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153747794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:34,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:34,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 51, 36] total 126 [2024-11-08 18:09:34,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693463495] [2024-11-08 18:09:34,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:34,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-08 18:09:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:34,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-08 18:09:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1096, Invalid=14654, Unknown=0, NotChecked=0, Total=15750 [2024-11-08 18:09:34,041 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 126 states, 126 states have (on average 1.9365079365079365) internal successors, (244), 126 states have internal predecessors, (244), 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 18:09:51,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:51,461 INFO L93 Difference]: Finished difference Result 200 states and 206 transitions. [2024-11-08 18:09:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-08 18:09:51,462 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.9365079365079365) internal successors, (244), 126 states have internal predecessors, (244), 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 95 [2024-11-08 18:09:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:51,463 INFO L225 Difference]: With dead ends: 200 [2024-11-08 18:09:51,463 INFO L226 Difference]: Without dead ends: 195 [2024-11-08 18:09:51,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9247 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=2193, Invalid=32963, Unknown=0, NotChecked=0, Total=35156 [2024-11-08 18:09:51,465 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 6413 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 6468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 6413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:51,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 180 Invalid, 6468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 6413 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-08 18:09:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-08 18:09:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 101. [2024-11-08 18:09:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 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 18:09:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2024-11-08 18:09:51,590 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 95 [2024-11-08 18:09:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:51,590 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2024-11-08 18:09:51,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.9365079365079365) internal successors, (244), 126 states have internal predecessors, (244), 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 18:09:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2024-11-08 18:09:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 18:09:51,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:51,591 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:51,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-08 18:09:51,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:51,792 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:51,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1862903167, now seen corresponding path program 40 times [2024-11-08 18:09:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:51,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070270856] [2024-11-08 18:09:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 198 proven. 223 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-08 18:09:52,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:52,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070270856] [2024-11-08 18:09:52,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070270856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:52,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186292804] [2024-11-08 18:09:52,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:09:52,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:52,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:52,503 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:52,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-08 18:09:52,713 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:09:52,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:09:52,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:09:52,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-08 18:09:53,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-08 18:09:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186292804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:54,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:54,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 79 [2024-11-08 18:09:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856000424] [2024-11-08 18:09:54,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:54,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-08 18:09:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-08 18:09:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=5359, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 18:09:54,622 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 79 states have internal predecessors, (167), 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 18:09:57,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:57,055 INFO L93 Difference]: Finished difference Result 230 states and 237 transitions. [2024-11-08 18:09:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-08 18:09:57,056 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 79 states have internal predecessors, (167), 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 18:09:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:57,057 INFO L225 Difference]: With dead ends: 230 [2024-11-08 18:09:57,057 INFO L226 Difference]: Without dead ends: 134 [2024-11-08 18:09:57,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 132 SyntacticMatches, 16 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6523 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2503, Invalid=16403, Unknown=0, NotChecked=0, Total=18906 [2024-11-08 18:09:57,059 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:57,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 67 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:09:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-08 18:09:57,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 100. [2024-11-08 18:09:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 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 18:09:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2024-11-08 18:09:57,242 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 97 [2024-11-08 18:09:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:57,243 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2024-11-08 18:09:57,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 79 states have internal predecessors, (167), 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 18:09:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2024-11-08 18:09:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 18:09:57,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:57,244 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:57,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-08 18:09:57,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-08 18:09:57,445 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:57,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash 834462406, now seen corresponding path program 41 times [2024-11-08 18:09:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078523198] [2024-11-08 18:09:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 169 proven. 252 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-08 18:09:58,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078523198] [2024-11-08 18:09:58,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078523198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455376675] [2024-11-08 18:09:58,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:09:58,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:58,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:58,052 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:58,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-08 18:09:59,336 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-08 18:09:59,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:09:59,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:09:59,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-08 18:09:59,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:10:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-08 18:10:00,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455376675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:10:00,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:10:00,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-11-08 18:10:00,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806422] [2024-11-08 18:10:00,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:10:00,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 18:10:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 18:10:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1871, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 18:10:00,269 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 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 18:10:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:00,772 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2024-11-08 18:10:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 18:10:00,772 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 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 99 [2024-11-08 18:10:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:00,774 INFO L225 Difference]: With dead ends: 140 [2024-11-08 18:10:00,774 INFO L226 Difference]: Without dead ends: 104 [2024-11-08 18:10:00,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 151 SyntacticMatches, 30 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=617, Invalid=2035, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 18:10:00,775 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 72 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:00,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 47 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:10:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-08 18:10:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2024-11-08 18:10:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 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 18:10:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2024-11-08 18:10:00,887 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 99 [2024-11-08 18:10:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:00,887 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2024-11-08 18:10:00,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 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 18:10:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2024-11-08 18:10:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:10:00,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:00,888 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:10:00,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-08 18:10:01,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-08 18:10:01,089 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:01,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1525089739, now seen corresponding path program 42 times [2024-11-08 18:10:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:01,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137236063] [2024-11-08 18:10:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 100 proven. 575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:09,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:09,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137236063] [2024-11-08 18:10:09,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137236063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:10:09,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135973916] [2024-11-08 18:10:09,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:10:09,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:10:09,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:10:09,800 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:10:09,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-08 18:10:10,857 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-08 18:10:10,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:10:10,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-11-08 18:10:10,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:10:11,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:10:17,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:10:18,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:10:18,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 165 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 156 treesize of output 555 [2024-11-08 18:10:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:19,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:10:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-08 18:10:28,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135973916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:10:28,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:10:28,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 54, 38] total 134 [2024-11-08 18:10:28,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519288360] [2024-11-08 18:10:28,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:10:28,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-11-08 18:10:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-11-08 18:10:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1149, Invalid=16673, Unknown=0, NotChecked=0, Total=17822 [2024-11-08 18:10:28,758 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 134 states, 134 states have (on average 1.9402985074626866) internal successors, (260), 134 states have internal predecessors, (260), 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 18:10:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:56,104 INFO L93 Difference]: Finished difference Result 214 states and 221 transitions. [2024-11-08 18:10:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-08 18:10:56,104 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.9402985074626866) internal successors, (260), 134 states have internal predecessors, (260), 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 101 [2024-11-08 18:10:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:56,106 INFO L225 Difference]: With dead ends: 214 [2024-11-08 18:10:56,106 INFO L226 Difference]: Without dead ends: 209 [2024-11-08 18:10:56,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9600 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=2534, Invalid=37666, Unknown=0, NotChecked=0, Total=40200 [2024-11-08 18:10:56,109 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 76 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 7073 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 7159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 7073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:56,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 162 Invalid, 7159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 7073 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-08 18:10:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-08 18:10:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 144. [2024-11-08 18:10:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.0419580419580419) internal successors, (149), 143 states have internal predecessors, (149), 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 18:10:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 149 transitions. [2024-11-08 18:10:56,431 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 149 transitions. Word has length 101 [2024-11-08 18:10:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:56,431 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 149 transitions. [2024-11-08 18:10:56,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.9402985074626866) internal successors, (260), 134 states have internal predecessors, (260), 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 18:10:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 149 transitions. [2024-11-08 18:10:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:10:56,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:56,432 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:10:56,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-08 18:10:56,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-08 18:10:56,633 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:56,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash -501974128, now seen corresponding path program 43 times [2024-11-08 18:10:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:56,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252129872] [2024-11-08 18:10:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:56,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 227 proven. 254 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-08 18:10:57,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:57,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252129872] [2024-11-08 18:10:57,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252129872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:10:57,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329178588] [2024-11-08 18:10:57,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:10:57,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:10:57,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:10:57,448 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:10:57,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-08 18:10:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:57,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 18:10:57,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:10:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-08 18:10:58,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:10:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-08 18:10:59,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329178588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:10:59,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:10:59,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-11-08 18:10:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915437502] [2024-11-08 18:10:59,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:10:59,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 18:10:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 18:10:59,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 18:10:59,068 INFO L87 Difference]: Start difference. First operand 144 states and 149 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 18:10:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:59,885 INFO L93 Difference]: Finished difference Result 212 states and 218 transitions. [2024-11-08 18:10:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 18:10:59,886 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 103 [2024-11-08 18:10:59,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:59,887 INFO L225 Difference]: With dead ends: 212 [2024-11-08 18:10:59,887 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 18:10:59,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 157 SyntacticMatches, 31 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 18:10:59,888 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:59,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:10:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 18:11:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2024-11-08 18:11:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.037037037037037) internal successors, (112), 108 states have internal predecessors, (112), 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 18:11:00,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2024-11-08 18:11:00,059 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 103 [2024-11-08 18:11:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:00,059 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2024-11-08 18:11:00,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 18:11:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2024-11-08 18:11:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:11:00,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:00,060 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:00,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-08 18:11:00,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:00,261 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:00,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1709278645, now seen corresponding path program 44 times [2024-11-08 18:11:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:00,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707714012] [2024-11-08 18:11:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:00,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 196 proven. 285 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-08 18:11:01,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707714012] [2024-11-08 18:11:01,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707714012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106545520] [2024-11-08 18:11:01,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:11:01,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:01,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:01,101 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:01,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-08 18:11:01,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:11:01,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:11:01,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 18:11:01,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-08 18:11:01,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-08 18:11:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106545520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:02,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:02,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-11-08 18:11:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403185414] [2024-11-08 18:11:02,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:02,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 18:11:02,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:02,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 18:11:02,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 18:11:02,683 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 18:11:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:03,340 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2024-11-08 18:11:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 18:11:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 105 [2024-11-08 18:11:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:03,341 INFO L225 Difference]: With dead ends: 148 [2024-11-08 18:11:03,342 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 18:11:03,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 160 SyntacticMatches, 32 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2086 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2281, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 18:11:03,342 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 64 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:03,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 41 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:11:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 18:11:03,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2024-11-08 18:11:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 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 18:11:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2024-11-08 18:11:03,499 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 105 [2024-11-08 18:11:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:03,500 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2024-11-08 18:11:03,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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 18:11:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2024-11-08 18:11:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 18:11:03,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:03,501 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:03,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-08 18:11:03,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:03,702 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:03,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1735020378, now seen corresponding path program 45 times [2024-11-08 18:11:03,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:03,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517070349] [2024-11-08 18:11:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:03,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 100 proven. 668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:11:14,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:14,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517070349] [2024-11-08 18:11:14,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517070349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:14,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534726481] [2024-11-08 18:11:14,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:11:14,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:14,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:14,691 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:14,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-08 18:11:15,454 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-08 18:11:15,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:11:15,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 187 conjuncts are in the unsatisfiable core [2024-11-08 18:11:15,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:16,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:11:16,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:11:16,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:11:16,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:11:16,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:11:16,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:11:23,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:11:23,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:11:23,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-08 18:11:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:11:23,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-08 18:11:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534726481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:34,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:34,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 57, 40] total 142 [2024-11-08 18:11:34,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663435132] [2024-11-08 18:11:34,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:34,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2024-11-08 18:11:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:34,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2024-11-08 18:11:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1156, Invalid=18866, Unknown=0, NotChecked=0, Total=20022 [2024-11-08 18:11:34,155 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 142 states, 142 states have (on average 1.943661971830986) internal successors, (276), 142 states have internal predecessors, (276), 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 18:11:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:58,967 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2024-11-08 18:11:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-08 18:11:58,967 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 1.943661971830986) internal successors, (276), 142 states have internal predecessors, (276), 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 107 [2024-11-08 18:11:58,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:58,969 INFO L225 Difference]: With dead ends: 223 [2024-11-08 18:11:58,969 INFO L226 Difference]: Without dead ends: 218 [2024-11-08 18:11:58,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12528 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=2121, Invalid=40521, Unknown=0, NotChecked=0, Total=42642 [2024-11-08 18:11:58,973 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 8188 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 8210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 8188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:58,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 202 Invalid, 8210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 8188 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-08 18:11:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-08 18:11:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 113. [2024-11-08 18:11:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 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 18:11:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2024-11-08 18:11:59,174 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 107 [2024-11-08 18:11:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:59,175 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2024-11-08 18:11:59,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 1.943661971830986) internal successors, (276), 142 states have internal predecessors, (276), 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 18:11:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2024-11-08 18:11:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-08 18:11:59,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:59,176 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:59,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-08 18:11:59,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:59,377 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:59,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1422150305, now seen corresponding path program 46 times [2024-11-08 18:11:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:59,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582623862] [2024-11-08 18:11:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:59,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 258 proven. 287 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-08 18:12:00,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:00,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582623862] [2024-11-08 18:12:00,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582623862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:00,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957648976] [2024-11-08 18:12:00,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:12:00,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:00,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:00,277 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:00,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-08 18:12:00,540 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:12:00,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:12:00,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 18:12:00,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-08 18:12:02,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-08 18:12:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957648976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:03,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:03,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 89 [2024-11-08 18:12:03,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880573918] [2024-11-08 18:12:03,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:03,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-08 18:12:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-08 18:12:03,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1011, Invalid=6821, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 18:12:03,469 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 89 states have internal predecessors, (187), 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 18:12:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:07,484 INFO L93 Difference]: Finished difference Result 258 states and 265 transitions. [2024-11-08 18:12:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-08 18:12:07,485 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 89 states have internal predecessors, (187), 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 109 [2024-11-08 18:12:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:07,486 INFO L225 Difference]: With dead ends: 258 [2024-11-08 18:12:07,486 INFO L226 Difference]: Without dead ends: 150 [2024-11-08 18:12:07,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 148 SyntacticMatches, 18 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8430 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3175, Invalid=21005, Unknown=0, NotChecked=0, Total=24180 [2024-11-08 18:12:07,490 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 63 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:07,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 100 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 18:12:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-08 18:12:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 112. [2024-11-08 18:12:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 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 18:12:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2024-11-08 18:12:07,745 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 109 [2024-11-08 18:12:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:07,745 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2024-11-08 18:12:07,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 89 states have internal predecessors, (187), 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 18:12:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2024-11-08 18:12:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 18:12:07,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:07,746 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:07,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-08 18:12:07,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-08 18:12:07,947 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:07,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2088018396, now seen corresponding path program 47 times [2024-11-08 18:12:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:07,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483519397] [2024-11-08 18:12:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:07,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 225 proven. 320 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-08 18:12:08,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483519397] [2024-11-08 18:12:08,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483519397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:08,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819985369] [2024-11-08 18:12:08,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:12:08,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:08,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:08,844 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:08,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-08 18:12:10,399 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-08 18:12:10,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:12:10,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 18:12:10,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-08 18:12:11,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-08 18:12:11,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819985369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:11,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-11-08 18:12:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045166975] [2024-11-08 18:12:11,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:11,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 18:12:11,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 18:12:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 18:12:11,663 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand has 56 states, 56 states have (on average 2.125) internal successors, (119), 56 states have internal predecessors, (119), 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 18:12:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:12,345 INFO L93 Difference]: Finished difference Result 156 states and 159 transitions. [2024-11-08 18:12:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:12:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.125) internal successors, (119), 56 states have internal predecessors, (119), 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 111 [2024-11-08 18:12:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:12,347 INFO L225 Difference]: With dead ends: 156 [2024-11-08 18:12:12,347 INFO L226 Difference]: Without dead ends: 116 [2024-11-08 18:12:12,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 169 SyntacticMatches, 34 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=765, Invalid=2541, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 18:12:12,348 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 101 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:12,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 47 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:12:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-08 18:12:12,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-11-08 18:12:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 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 18:12:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2024-11-08 18:12:12,596 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 111 [2024-11-08 18:12:12,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:12,597 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2024-11-08 18:12:12,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.125) internal successors, (119), 56 states have internal predecessors, (119), 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 18:12:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2024-11-08 18:12:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 18:12:12,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:12,598 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:12,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-08 18:12:12,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-08 18:12:12,802 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:12,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:12,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1073631657, now seen corresponding path program 48 times [2024-11-08 18:12:12,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:12,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057651553] [2024-11-08 18:12:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:12,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 144 proven. 723 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:12:26,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057651553] [2024-11-08 18:12:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057651553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571858954] [2024-11-08 18:12:26,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:12:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:26,121 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:26,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-08 18:12:27,157 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-08 18:12:27,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:12:27,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 173 conjuncts are in the unsatisfiable core [2024-11-08 18:12:27,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:27,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:12:34,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:12:34,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:12:34,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:12:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:12:34,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:12:34,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:12:34,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:12:34,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 74 treesize of output 113 [2024-11-08 18:12:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 17 proven. 578 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-08 18:12:34,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-08 18:12:48,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571858954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:48,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:48,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 43, 42] total 137 [2024-11-08 18:12:48,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334820883] [2024-11-08 18:12:48,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:48,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-08 18:12:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-08 18:12:48,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=17911, Unknown=0, NotChecked=0, Total=18632 [2024-11-08 18:12:48,099 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 137 states, 137 states have (on average 1.9635036496350364) internal successors, (269), 137 states have internal predecessors, (269), 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 18:13:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:17,398 INFO L93 Difference]: Finished difference Result 158 states and 161 transitions. [2024-11-08 18:13:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-08 18:13:17,399 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.9635036496350364) internal successors, (269), 137 states have internal predecessors, (269), 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 113 [2024-11-08 18:13:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:17,400 INFO L225 Difference]: With dead ends: 158 [2024-11-08 18:13:17,400 INFO L226 Difference]: Without dead ends: 154 [2024-11-08 18:13:17,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8674 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=1841, Invalid=43741, Unknown=0, NotChecked=0, Total=45582 [2024-11-08 18:13:17,403 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 9711 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 9711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:17,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 245 Invalid, 9728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 9711 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-08 18:13:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-08 18:13:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2024-11-08 18:13:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 118 states have internal predecessors, (122), 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 18:13:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2024-11-08 18:13:17,682 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 113 [2024-11-08 18:13:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:17,682 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2024-11-08 18:13:17,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.9635036496350364) internal successors, (269), 137 states have internal predecessors, (269), 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 18:13:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2024-11-08 18:13:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 18:13:17,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:17,684 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:17,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-08 18:13:17,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-08 18:13:17,884 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:17,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1417512978, now seen corresponding path program 49 times [2024-11-08 18:13:17,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:17,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465059539] [2024-11-08 18:13:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 291 proven. 322 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-08 18:13:18,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:18,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465059539] [2024-11-08 18:13:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465059539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:13:18,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119520872] [2024-11-08 18:13:18,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:13:18,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:13:18,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:13:18,819 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:13:18,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-08 18:13:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:19,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 18:13:19,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:13:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 324 proven. 289 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-08 18:13:20,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:13:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 324 proven. 289 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-08 18:13:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119520872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:13:20,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:13:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-08 18:13:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287369321] [2024-11-08 18:13:20,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:13:20,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 18:13:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 18:13:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:13:20,778 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 18:13:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:21,866 INFO L93 Difference]: Finished difference Result 236 states and 242 transitions. [2024-11-08 18:13:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:13:21,866 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 115 [2024-11-08 18:13:21,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:21,868 INFO L225 Difference]: With dead ends: 236 [2024-11-08 18:13:21,868 INFO L226 Difference]: Without dead ends: 122 [2024-11-08 18:13:21,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 175 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:13:21,869 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:21,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 47 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:13:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-08 18:13:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-11-08 18:13:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 120 states have internal predecessors, (124), 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 18:13:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2024-11-08 18:13:22,130 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 115 [2024-11-08 18:13:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:22,130 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2024-11-08 18:13:22,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 18:13:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2024-11-08 18:13:22,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 18:13:22,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:22,131 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:22,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-08 18:13:22,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-08 18:13:22,332 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:22,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2063626899, now seen corresponding path program 50 times [2024-11-08 18:13:22,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:22,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336645285] [2024-11-08 18:13:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 256 proven. 357 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-08 18:13:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336645285] [2024-11-08 18:13:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336645285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:13:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470623404] [2024-11-08 18:13:23,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:13:23,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:13:23,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:13:23,407 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:13:23,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-08 18:13:23,721 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:13:23,721 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:13:23,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 18:13:23,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:13:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-08 18:13:24,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:13:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-08 18:13:25,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470623404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:13:25,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:13:25,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-08 18:13:25,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179662968] [2024-11-08 18:13:25,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:13:25,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 18:13:25,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 18:13:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=2621, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:13:25,200 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 18:13:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:25,948 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2024-11-08 18:13:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 18:13:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 117 [2024-11-08 18:13:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:25,949 INFO L225 Difference]: With dead ends: 164 [2024-11-08 18:13:25,949 INFO L226 Difference]: Without dead ends: 122 [2024-11-08 18:13:25,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 178 SyntacticMatches, 36 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2619 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=845, Invalid=2815, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 18:13:25,950 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 87 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:25,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 49 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:13:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-08 18:13:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-11-08 18:13:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 119 states have internal predecessors, (122), 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 18:13:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2024-11-08 18:13:26,210 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 117 [2024-11-08 18:13:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:26,211 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2024-11-08 18:13:26,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 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 18:13:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2024-11-08 18:13:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-08 18:13:26,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:26,212 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:26,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-08 18:13:26,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-08 18:13:26,412 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:26,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1333691208, now seen corresponding path program 51 times [2024-11-08 18:13:26,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:26,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274734507] [2024-11-08 18:13:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 144 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:40,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274734507] [2024-11-08 18:13:40,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274734507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:13:40,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328732438] [2024-11-08 18:13:40,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:13:40,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:13:40,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:13:40,084 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:13:40,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-08 18:13:40,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-08 18:13:40,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:13:40,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-11-08 18:13:40,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:13:41,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:13:41,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:13:41,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:13:50,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:50,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:13:51,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:13:51,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 108 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 164 treesize of output 473 [2024-11-08 18:13:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 18 proven. 648 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-08 18:13:52,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:14:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 18:14:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328732438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:14:09,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:14:09,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 45, 53] total 153 [2024-11-08 18:14:09,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721135888] [2024-11-08 18:14:09,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:14:09,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2024-11-08 18:14:09,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2024-11-08 18:14:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1210, Invalid=22046, Unknown=0, NotChecked=0, Total=23256 [2024-11-08 18:14:09,125 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 153 states, 153 states have (on average 1.9542483660130718) internal successors, (299), 153 states have internal predecessors, (299), 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 18:14:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:14:48,617 INFO L93 Difference]: Finished difference Result 166 states and 169 transitions. [2024-11-08 18:14:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-08 18:14:48,618 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 1.9542483660130718) internal successors, (299), 153 states have internal predecessors, (299), 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 119 [2024-11-08 18:14:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:14:48,619 INFO L225 Difference]: With dead ends: 166 [2024-11-08 18:14:48,619 INFO L226 Difference]: Without dead ends: 162 [2024-11-08 18:14:48,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10259 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=3031, Invalid=51959, Unknown=0, NotChecked=0, Total=54990 [2024-11-08 18:14:48,622 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 9855 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 9908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 9855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:14:48,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 221 Invalid, 9908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 9855 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-08 18:14:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-08 18:14:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 125. [2024-11-08 18:14:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.032258064516129) internal successors, (128), 124 states have internal predecessors, (128), 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 18:14:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2024-11-08 18:14:48,900 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 119 [2024-11-08 18:14:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:14:48,900 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2024-11-08 18:14:48,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 1.9542483660130718) internal successors, (299), 153 states have internal predecessors, (299), 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 18:14:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2024-11-08 18:14:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 18:14:48,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:14:48,901 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:48,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-08 18:14:49,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:49,101 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:14:49,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2106903747, now seen corresponding path program 52 times [2024-11-08 18:14:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596179543] [2024-11-08 18:14:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:14:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 326 proven. 359 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-08 18:14:50,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:14:50,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596179543] [2024-11-08 18:14:50,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596179543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:14:50,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464645713] [2024-11-08 18:14:50,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:14:50,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:14:50,440 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:14:50,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-08 18:14:50,739 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:14:50,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:14:50,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 18:14:50,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:14:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-08 18:14:52,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:14:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-08 18:14:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464645713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:14:54,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:14:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 99 [2024-11-08 18:14:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764248304] [2024-11-08 18:14:54,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:14:54,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-08 18:14:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-08 18:14:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1243, Invalid=8459, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 18:14:54,159 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 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 18:14:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:14:58,714 INFO L93 Difference]: Finished difference Result 286 states and 293 transitions. [2024-11-08 18:14:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-08 18:14:58,714 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 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) Word has length 121 [2024-11-08 18:14:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:14:58,715 INFO L225 Difference]: With dead ends: 286 [2024-11-08 18:14:58,715 INFO L226 Difference]: Without dead ends: 166 [2024-11-08 18:14:58,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 164 SyntacticMatches, 20 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10581 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3927, Invalid=26175, Unknown=0, NotChecked=0, Total=30102 [2024-11-08 18:14:58,718 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 72 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:14:58,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 83 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2509 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:14:58,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-08 18:14:59,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 124. [2024-11-08 18:14:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.024390243902439) internal successors, (126), 123 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 18:14:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2024-11-08 18:14:59,003 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 121 [2024-11-08 18:14:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:14:59,003 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2024-11-08 18:14:59,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 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 18:14:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2024-11-08 18:14:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-08 18:14:59,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:14:59,004 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:14:59,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-08 18:14:59,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:14:59,204 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:14:59,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:14:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash -169395070, now seen corresponding path program 53 times [2024-11-08 18:14:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:14:59,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690910363] [2024-11-08 18:14:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:14:59,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:14:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 289 proven. 396 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-08 18:15:00,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:15:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690910363] [2024-11-08 18:15:00,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690910363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:15:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766818494] [2024-11-08 18:15:00,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:15:00,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:00,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:15:00,335 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:15:00,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-08 18:15:01,945 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-08 18:15:01,945 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:15:01,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 18:15:01,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:15:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 361 proven. 324 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-08 18:15:03,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:15:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 361 proven. 324 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-08 18:15:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766818494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:15:05,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:15:05,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 99 [2024-11-08 18:15:05,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88009337] [2024-11-08 18:15:05,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:15:05,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-08 18:15:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:15:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-08 18:15:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1261, Invalid=8441, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 18:15:05,538 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 99 states have internal predecessors, (205), 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 18:15:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:15:07,369 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2024-11-08 18:15:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 18:15:07,370 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 99 states have internal predecessors, (205), 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 123 [2024-11-08 18:15:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:15:07,371 INFO L225 Difference]: With dead ends: 172 [2024-11-08 18:15:07,371 INFO L226 Difference]: Without dead ends: 128 [2024-11-08 18:15:07,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5503 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1872, Invalid=12170, Unknown=0, NotChecked=0, Total=14042 [2024-11-08 18:15:07,373 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 167 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:15:07,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 84 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:15:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-08 18:15:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2024-11-08 18:15:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 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 18:15:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2024-11-08 18:15:07,667 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 123 [2024-11-08 18:15:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:15:07,668 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2024-11-08 18:15:07,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 99 states have internal predecessors, (205), 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 18:15:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2024-11-08 18:15:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 18:15:07,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:15:07,668 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:15:07,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-08 18:15:07,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:07,869 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:15:07,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:15:07,870 INFO L85 PathProgramCache]: Analyzing trace with hash -281132921, now seen corresponding path program 54 times [2024-11-08 18:15:07,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:15:07,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41695194] [2024-11-08 18:15:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:15:07,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:15:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 169 proven. 914 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:15:24,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:15:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41695194] [2024-11-08 18:15:24,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41695194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:15:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259401951] [2024-11-08 18:15:24,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:15:24,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:24,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:15:24,221 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:15:24,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-08 18:15:25,667 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-08 18:15:25,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:15:25,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 199 conjuncts are in the unsatisfiable core [2024-11-08 18:15:25,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:15:25,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:15:25,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:15:35,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:35,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:36,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:15:38,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:15:38,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 28 select indices, 28 select index equivalence classes, 273 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 378 case distinctions, treesize of input 198 treesize of output 873 [2024-11-08 18:15:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 19 proven. 722 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-08 18:15:43,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:16:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 18:16:02,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259401951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:16:02,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:16:02,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 47, 60] total 165 [2024-11-08 18:16:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493393234] [2024-11-08 18:16:02,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:16:02,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2024-11-08 18:16:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:16:02,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2024-11-08 18:16:02,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=25502, Unknown=0, NotChecked=0, Total=27060 [2024-11-08 18:16:02,066 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 165 states, 165 states have (on average 1.9575757575757575) internal successors, (323), 165 states have internal predecessors, (323), 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 18:16:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:16:36,181 INFO L93 Difference]: Finished difference Result 174 states and 177 transitions. [2024-11-08 18:16:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-08 18:16:36,181 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 1.9575757575757575) internal successors, (323), 165 states have internal predecessors, (323), 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 125 [2024-11-08 18:16:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:16:36,182 INFO L225 Difference]: With dead ends: 174 [2024-11-08 18:16:36,182 INFO L226 Difference]: Without dead ends: 170 [2024-11-08 18:16:36,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10755 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=3533, Invalid=49597, Unknown=0, NotChecked=0, Total=53130 [2024-11-08 18:16:36,185 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 85 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 11507 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 11592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 11507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:16:36,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 299 Invalid, 11592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 11507 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2024-11-08 18:16:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-08 18:16:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 131. [2024-11-08 18:16:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 130 states have internal predecessors, (134), 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 18:16:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2024-11-08 18:16:36,588 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 125 [2024-11-08 18:16:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:16:36,588 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2024-11-08 18:16:36,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 1.9575757575757575) internal successors, (323), 165 states have internal predecessors, (323), 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 18:16:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2024-11-08 18:16:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-08 18:16:36,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:16:36,589 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:16:36,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-11-08 18:16:36,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-08 18:16:36,790 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:16:36,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:16:36,790 INFO L85 PathProgramCache]: Analyzing trace with hash -287025332, now seen corresponding path program 55 times [2024-11-08 18:16:36,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:16:36,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124322097] [2024-11-08 18:16:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:16:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:16:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:16:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 363 proven. 398 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-08 18:16:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:16:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124322097] [2024-11-08 18:16:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124322097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:16:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762164177] [2024-11-08 18:16:38,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:16:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:16:38,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:16:38,068 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:16:38,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-08 18:16:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:16:38,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 18:16:38,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:16:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 400 proven. 361 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-08 18:16:39,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:16:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 400 proven. 361 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-08 18:16:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762164177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:16:40,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:16:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-08 18:16:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940352064] [2024-11-08 18:16:40,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:16:40,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 18:16:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:16:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 18:16:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 18:16:40,700 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 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 18:16:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:16:42,076 INFO L93 Difference]: Finished difference Result 260 states and 266 transitions. [2024-11-08 18:16:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 18:16:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 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 127 [2024-11-08 18:16:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:16:42,078 INFO L225 Difference]: With dead ends: 260 [2024-11-08 18:16:42,078 INFO L226 Difference]: Without dead ends: 134 [2024-11-08 18:16:42,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 193 SyntacticMatches, 39 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 18:16:42,080 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:16:42,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 47 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:16:42,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-08 18:16:42,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2024-11-08 18:16:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0303030303030303) internal successors, (136), 132 states have internal predecessors, (136), 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 18:16:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2024-11-08 18:16:42,424 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 127 [2024-11-08 18:16:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:16:42,424 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2024-11-08 18:16:42,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 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 18:16:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2024-11-08 18:16:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-08 18:16:42,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:16:42,425 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:16:42,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-11-08 18:16:42,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-08 18:16:42,626 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:16:42,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:16:42,626 INFO L85 PathProgramCache]: Analyzing trace with hash 430867057, now seen corresponding path program 56 times [2024-11-08 18:16:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:16:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606203868] [2024-11-08 18:16:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:16:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:16:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:16:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 324 proven. 437 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-08 18:16:43,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:16:43,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606203868] [2024-11-08 18:16:43,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606203868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:16:43,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962266110] [2024-11-08 18:16:43,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:16:43,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:16:43,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:16:43,968 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:16:43,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-08 18:16:44,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:16:44,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:16:44,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 18:16:44,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:16:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-08 18:16:45,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:16:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-08 18:16:46,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962266110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:16:46,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:16:46,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-08 18:16:46,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913873060] [2024-11-08 18:16:46,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:16:46,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 18:16:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:16:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 18:16:46,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=969, Invalid=3191, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 18:16:46,417 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 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 18:16:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:16:47,406 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2024-11-08 18:16:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 18:16:47,407 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 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 129 [2024-11-08 18:16:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:16:47,408 INFO L225 Difference]: With dead ends: 180 [2024-11-08 18:16:47,408 INFO L226 Difference]: Without dead ends: 134 [2024-11-08 18:16:47,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 196 SyntacticMatches, 40 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3212 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1017, Invalid=3405, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 18:16:47,410 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 104 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:16:47,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 45 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:16:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-08 18:16:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2024-11-08 18:16:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 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 18:16:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2024-11-08 18:16:47,753 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 129 [2024-11-08 18:16:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:16:47,753 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2024-11-08 18:16:47,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 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 18:16:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2024-11-08 18:16:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-08 18:16:47,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:16:47,754 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:16:47,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-08 18:16:47,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-08 18:16:47,955 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:16:47,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:16:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1542130966, now seen corresponding path program 57 times [2024-11-08 18:16:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:16:47,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351247694] [2024-11-08 18:16:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:16:47,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:16:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:17:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 108 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:17:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:17:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351247694] [2024-11-08 18:17:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351247694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:17:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084518149] [2024-11-08 18:17:06,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:17:06,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:17:06,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:17:06,928 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:17:06,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-08 18:17:07,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-08 18:17:07,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:17:07,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-08 18:17:07,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:17:08,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:17:08,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:17:08,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 18:17:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:19,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:17:20,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:17:20,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 135 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 142 treesize of output 465 [2024-11-08 18:17:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 20 proven. 800 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-08 18:17:21,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:17:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1090 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-08 18:17:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084518149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:17:43,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:17:43,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 49, 58] total 168 [2024-11-08 18:17:43,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615745308] [2024-11-08 18:17:43,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:17:43,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2024-11-08 18:17:43,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:17:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2024-11-08 18:17:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=26330, Unknown=0, NotChecked=0, Total=28056 [2024-11-08 18:17:43,153 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 168 states, 168 states have (on average 1.9583333333333333) internal successors, (329), 168 states have internal predecessors, (329), 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 18:18:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:18:16,274 INFO L93 Difference]: Finished difference Result 182 states and 185 transitions. [2024-11-08 18:18:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-08 18:18:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 1.9583333333333333) internal successors, (329), 168 states have internal predecessors, (329), 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 131 [2024-11-08 18:18:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:18:16,276 INFO L225 Difference]: With dead ends: 182 [2024-11-08 18:18:16,276 INFO L226 Difference]: Without dead ends: 178 [2024-11-08 18:18:16,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11498 ImplicationChecksByTransitivity, 52.7s TimeCoverageRelationStatistics Valid=3523, Invalid=49607, Unknown=0, NotChecked=0, Total=53130 [2024-11-08 18:18:16,280 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 12079 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 12135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 12079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:18:16,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 255 Invalid, 12135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 12079 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2024-11-08 18:18:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-08 18:18:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 137. [2024-11-08 18:18:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 136 states have internal predecessors, (140), 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 18:18:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2024-11-08 18:18:16,621 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 131 [2024-11-08 18:18:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:18:16,621 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2024-11-08 18:18:16,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 1.9583333333333333) internal successors, (329), 168 states have internal predecessors, (329), 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 18:18:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2024-11-08 18:18:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-08 18:18:16,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:18:16,622 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:18:16,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-08 18:18:16,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-08 18:18:16,822 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:18:16,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:18:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash -834120677, now seen corresponding path program 58 times [2024-11-08 18:18:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:18:16,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700211471] [2024-11-08 18:18:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:18:16,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:18:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:18:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 402 proven. 439 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-08 18:18:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:18:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700211471] [2024-11-08 18:18:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700211471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:18:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903974189] [2024-11-08 18:18:18,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:18:18,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:18:18,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:18:18,025 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:18:18,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4a5ba4-80b5-43c1-87d0-156d53a3aa2d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-08 18:18:18,345 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:18:18,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:18:18,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 18:18:18,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:18:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-08 18:18:20,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:18:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-08 18:18:22,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903974189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:18:22,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:18:22,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 109 [2024-11-08 18:18:22,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789962038] [2024-11-08 18:18:22,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:18:22,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-08 18:18:22,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:18:22,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-08 18:18:22,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1499, Invalid=10273, Unknown=0, NotChecked=0, Total=11772 [2024-11-08 18:18:22,067 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 109 states, 109 states have (on average 2.0825688073394497) internal successors, (227), 109 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)