./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_running-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_running-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU --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 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:40,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:41,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:58:41,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:41,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:41,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:41,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:41,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:41,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:58:41,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:58:41,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:58:41,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:58:41,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:41,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:41,049 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:41,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:41,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:58:41,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:58:41,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:41,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:58:41,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:41,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:58:41,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:58:41,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:58:41,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:41,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:58:41,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:58:41,058 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:41,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:41,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:41,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:58:41,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:58:41,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:41,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:41,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:58:41,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:58:41,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:41,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:58:41,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:58:41,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:58:41,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:58:41,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:58:41,063 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_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 [2024-10-31 21:58:41,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:41,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:41,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:41,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:41,399 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:41,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/array-examples/standard_running-1.i Unable to find full path for "g++" [2024-10-31 21:58:43,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:43,756 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:43,757 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/sv-benchmarks/c/array-examples/standard_running-1.i [2024-10-31 21:58:43,767 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/data/0e7b2d39f/2860e31083c6462093648fbf32b272fa/FLAG7b0db578b [2024-10-31 21:58:43,785 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/data/0e7b2d39f/2860e31083c6462093648fbf32b272fa [2024-10-31 21:58:43,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:43,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:43,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:43,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:43,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:43,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:43" (1/1) ... [2024-10-31 21:58:43,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4cdc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:43, skipping insertion in model container [2024-10-31 21:58:43,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:43" (1/1) ... [2024-10-31 21:58:43,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:44,015 WARN L251 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_66f7fb77-4ba8-4f69-b185-90098c8b11f6/sv-benchmarks/c/array-examples/standard_running-1.i[811,824] [2024-10-31 21:58:44,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:44,043 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:44,054 WARN L251 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_66f7fb77-4ba8-4f69-b185-90098c8b11f6/sv-benchmarks/c/array-examples/standard_running-1.i[811,824] [2024-10-31 21:58:44,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:44,082 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:44,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44 WrapperNode [2024-10-31 21:58:44,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:44,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:44,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:44,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:44,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,118 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2024-10-31 21:58:44,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:44,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:44,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:44,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:44,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,151 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-10-31 21:58:44,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:44,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:44,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:44,170 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:44,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (1/1) ... [2024-10-31 21:58:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:44,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:44,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:58:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:58:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:58:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 21:58:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 21:58:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 21:58:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 21:58:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 21:58:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 21:58:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 21:58:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 21:58:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 21:58:44,379 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:44,382 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:44,619 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-10-31 21:58:44,619 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:44,634 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:44,635 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 21:58:44,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:44 BoogieIcfgContainer [2024-10-31 21:58:44,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:44,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:58:44,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:58:44,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:58:44,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:58:43" (1/3) ... [2024-10-31 21:58:44,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cbe8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:44, skipping insertion in model container [2024-10-31 21:58:44,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:44" (2/3) ... [2024-10-31 21:58:44,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cbe8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:44, skipping insertion in model container [2024-10-31 21:58:44,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:44" (3/3) ... [2024-10-31 21:58:44,648 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2024-10-31 21:58:44,670 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:58:44,670 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:58:44,765 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:44,779 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;@2443f10a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:44,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 21:58:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 21:58:44,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:44,795 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:44,796 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:44,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:44,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2030235279, now seen corresponding path program 1 times [2024-10-31 21:58:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:44,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386236298] [2024-10-31 21:58:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:44,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:45,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:45,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386236298] [2024-10-31 21:58:45,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386236298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:45,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447093169] [2024-10-31 21:58:45,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:45,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:45,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:45,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:45,113 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 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 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:45,226 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2024-10-31 21:58:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:45,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-10-31 21:58:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:45,239 INFO L225 Difference]: With dead ends: 56 [2024-10-31 21:58:45,240 INFO L226 Difference]: Without dead ends: 32 [2024-10-31 21:58:45,243 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 [2024-10-31 21:58:45,261 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:45,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 33 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:58:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-31 21:58:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2024-10-31 21:58:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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) [2024-10-31 21:58:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-10-31 21:58:45,311 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2024-10-31 21:58:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:45,312 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-10-31 21:58:45,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-10-31 21:58:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-31 21:58:45,314 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:45,314 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:45,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:45,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:45,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:45,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1221461665, now seen corresponding path program 1 times [2024-10-31 21:58:45,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:45,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532190060] [2024-10-31 21:58:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:45,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:58:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532190060] [2024-10-31 21:58:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532190060] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661886578] [2024-10-31 21:58:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:45,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:45,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:45,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:45,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:58:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:45,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:58:45,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:58:45,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:58:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661886578] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:45,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:45,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 21:58:45,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394512644] [2024-10-31 21:58:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:45,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:58:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:58:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:58:45,944 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:46,147 INFO L93 Difference]: Finished difference Result 77 states and 114 transitions. [2024-10-31 21:58:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:46,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 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 22 [2024-10-31 21:58:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:46,150 INFO L225 Difference]: With dead ends: 77 [2024-10-31 21:58:46,150 INFO L226 Difference]: Without dead ends: 59 [2024-10-31 21:58:46,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:58:46,157 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 145 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:46,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 38 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:58:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-31 21:58:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-31 21:58:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2024-10-31 21:58:46,181 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 22 [2024-10-31 21:58:46,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:46,181 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2024-10-31 21:58:46,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2024-10-31 21:58:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-31 21:58:46,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:46,186 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:46,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:58:46,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-31 21:58:46,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:46,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1687151938, now seen corresponding path program 2 times [2024-10-31 21:58:46,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:46,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612371604] [2024-10-31 21:58:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:46,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-31 21:58:46,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:46,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612371604] [2024-10-31 21:58:46,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612371604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:46,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:46,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613732] [2024-10-31 21:58:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:46,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:46,926 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) [2024-10-31 21:58:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:47,034 INFO L93 Difference]: Finished difference Result 111 states and 162 transitions. [2024-10-31 21:58:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:47,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) Word has length 58 [2024-10-31 21:58:47,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:47,036 INFO L225 Difference]: With dead ends: 111 [2024-10-31 21:58:47,036 INFO L226 Difference]: Without dead ends: 83 [2024-10-31 21:58:47,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:47,038 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:47,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:58:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-31 21:58:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2024-10-31 21:58:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 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) [2024-10-31 21:58:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2024-10-31 21:58:47,052 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 58 [2024-10-31 21:58:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:47,053 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2024-10-31 21:58:47,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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) [2024-10-31 21:58:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2024-10-31 21:58:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-31 21:58:47,055 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:47,055 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:47,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:47,055 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:47,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:47,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1354664638, now seen corresponding path program 1 times [2024-10-31 21:58:47,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873746786] [2024-10-31 21:58:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-31 21:58:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873746786] [2024-10-31 21:58:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873746786] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897542132] [2024-10-31 21:58:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:47,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:47,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:47,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:58:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:47,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:47,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-31 21:58:47,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-31 21:58:47,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897542132] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:47,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:47,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 21:58:47,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330784208] [2024-10-31 21:58:47,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:47,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 21:58:47,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:47,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 21:58:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:58:47,644 INFO L87 Difference]: Start difference. First operand 75 states and 101 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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) [2024-10-31 21:58:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:47,977 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2024-10-31 21:58:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:58:47,978 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 58 [2024-10-31 21:58:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:47,979 INFO L225 Difference]: With dead ends: 235 [2024-10-31 21:58:47,979 INFO L226 Difference]: Without dead ends: 171 [2024-10-31 21:58:47,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:58:47,983 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 236 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:47,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 88 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:58:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-31 21:58:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-31 21:58:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3705882352941177) internal successors, (233), 170 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 233 transitions. [2024-10-31 21:58:48,015 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 233 transitions. Word has length 58 [2024-10-31 21:58:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:48,015 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 233 transitions. [2024-10-31 21:58:48,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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) [2024-10-31 21:58:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 233 transitions. [2024-10-31 21:58:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-31 21:58:48,021 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:48,021 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:48,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 21:58:48,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:48,223 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:48,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1703650066, now seen corresponding path program 2 times [2024-10-31 21:58:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:48,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172072007] [2024-10-31 21:58:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:48,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-10-31 21:58:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172072007] [2024-10-31 21:58:48,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172072007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648808455] [2024-10-31 21:58:48,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:58:48,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:48,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:48,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:58:49,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:58:49,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:49,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 21:58:49,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-10-31 21:58:49,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-10-31 21:58:49,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648808455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:49,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:49,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-31 21:58:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233038128] [2024-10-31 21:58:49,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:49,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-31 21:58:49,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-31 21:58:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-31 21:58:49,537 INFO L87 Difference]: Start difference. First operand 171 states and 233 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 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) [2024-10-31 21:58:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:50,164 INFO L93 Difference]: Finished difference Result 511 states and 742 transitions. [2024-10-31 21:58:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 21:58:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 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 130 [2024-10-31 21:58:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:50,168 INFO L225 Difference]: With dead ends: 511 [2024-10-31 21:58:50,168 INFO L226 Difference]: Without dead ends: 363 [2024-10-31 21:58:50,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-31 21:58:50,170 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 886 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:50,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 152 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 21:58:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-10-31 21:58:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-10-31 21:58:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.37292817679558) internal successors, (497), 362 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 497 transitions. [2024-10-31 21:58:50,195 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 497 transitions. Word has length 130 [2024-10-31 21:58:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:50,196 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 497 transitions. [2024-10-31 21:58:50,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 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) [2024-10-31 21:58:50,196 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 497 transitions. [2024-10-31 21:58:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-10-31 21:58:50,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:50,201 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:50,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 21:58:50,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:50,410 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:50,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:50,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1176972730, now seen corresponding path program 3 times [2024-10-31 21:58:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:50,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844715167] [2024-10-31 21:58:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:50,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2024-10-31 21:58:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:52,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844715167] [2024-10-31 21:58:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844715167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093235076] [2024-10-31 21:58:52,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:58:52,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:52,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:52,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:52,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:58:52,365 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-31 21:58:52,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:52,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:58:52,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:52,459 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 11 [2024-10-31 21:58:53,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 21:58:53,050 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 39 treesize of output 25 [2024-10-31 21:58:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 85 proven. 127 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2024-10-31 21:58:53,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:53,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-10-31 21:58:53,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-10-31 21:58:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 64 proven. 148 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2024-10-31 21:58:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093235076] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:53,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:53,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 37 [2024-10-31 21:58:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345187574] [2024-10-31 21:58:53,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:53,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-31 21:58:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-31 21:58:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=818, Unknown=0, NotChecked=0, Total=1332 [2024-10-31 21:58:53,933 INFO L87 Difference]: Start difference. First operand 363 states and 497 transitions. Second operand has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:57,746 INFO L93 Difference]: Finished difference Result 1082 states and 1532 transitions. [2024-10-31 21:58:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-10-31 21:58:57,747 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 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 274 [2024-10-31 21:58:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:57,757 INFO L225 Difference]: With dead ends: 1082 [2024-10-31 21:58:57,762 INFO L226 Difference]: Without dead ends: 766 [2024-10-31 21:58:57,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 533 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3154 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3676, Invalid=8534, Unknown=0, NotChecked=0, Total=12210 [2024-10-31 21:58:57,777 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2335 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:57,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 240 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 21:58:57,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-10-31 21:58:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 690. [2024-10-31 21:58:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 1.4063860667634251) internal successors, (969), 689 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 969 transitions. [2024-10-31 21:58:57,886 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 969 transitions. Word has length 274 [2024-10-31 21:58:57,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:57,886 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 969 transitions. [2024-10-31 21:58:57,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 969 transitions. [2024-10-31 21:58:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-10-31 21:58:57,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:57,904 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:57,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 21:58:58,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:58,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:58,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2005252399, now seen corresponding path program 1 times [2024-10-31 21:58:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:58,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206470865] [2024-10-31 21:58:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:58,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3050 trivial. 0 not checked. [2024-10-31 21:58:59,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:59,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206470865] [2024-10-31 21:59:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206470865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797260094] [2024-10-31 21:59:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:00,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:00,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:00,006 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:00,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:59:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:00,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-31 21:59:00,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3050 trivial. 0 not checked. [2024-10-31 21:59:00,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3050 trivial. 0 not checked. [2024-10-31 21:59:01,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797260094] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:01,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:01,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-10-31 21:59:01,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669369564] [2024-10-31 21:59:01,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:02,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-31 21:59:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-31 21:59:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2024-10-31 21:59:02,004 INFO L87 Difference]: Start difference. First operand 690 states and 969 transitions. Second operand has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 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) [2024-10-31 21:59:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:04,324 INFO L93 Difference]: Finished difference Result 2390 states and 3379 transitions. [2024-10-31 21:59:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-31 21:59:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-10-31 21:59:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:04,332 INFO L225 Difference]: With dead ends: 2390 [2024-10-31 21:59:04,336 INFO L226 Difference]: Without dead ends: 1753 [2024-10-31 21:59:04,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2024-10-31 21:59:04,340 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2147 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:04,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 342 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 21:59:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2024-10-31 21:59:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1419. [2024-10-31 21:59:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 1.4069111424541607) internal successors, (1995), 1418 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1995 transitions. [2024-10-31 21:59:04,401 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1995 transitions. Word has length 310 [2024-10-31 21:59:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:04,402 INFO L471 AbstractCegarLoop]: Abstraction has 1419 states and 1995 transitions. [2024-10-31 21:59:04,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 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) [2024-10-31 21:59:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1995 transitions. [2024-10-31 21:59:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2024-10-31 21:59:04,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:04,419 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:04,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:04,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:04,623 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:04,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1627801764, now seen corresponding path program 2 times [2024-10-31 21:59:04,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809529165] [2024-10-31 21:59:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:04,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16068 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 13364 trivial. 0 not checked. [2024-10-31 21:59:10,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:10,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809529165] [2024-10-31 21:59:10,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809529165] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:10,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362721046] [2024-10-31 21:59:10,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:10,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:10,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:10,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:10,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66f7fb77-4ba8-4f69-b185-90098c8b11f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:59:11,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:11,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:11,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-31 21:59:11,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16068 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 13364 trivial. 0 not checked. [2024-10-31 21:59:11,410 INFO L311 TraceCheckSpWp]: Computing backward predicates...