./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_38_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_38_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 ac8a5151fbb2de82e81ce0a44f95db14126e113a8aca5d471f6bb3dda343b7d3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:37:38,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:37:38,184 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:37:38,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:37:38,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:37:38,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:37:38,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:37:38,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:37:38,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:37:38,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:37:38,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:37:38,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:37:38,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:37:38,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:37:38,232 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:37:38,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:37:38,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:37:38,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:37:38,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:37:38,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:37:38,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:37:38,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:37:38,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:37:38,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:37:38,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:37:38,235 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:37:38,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:37:38,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:37:38,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:37:38,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:37:38,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:37:38,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:37:38,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:37:38,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:37:38,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:37:38,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:37:38,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:37:38,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:37:38,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:37:38,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:37:38,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:37:38,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:37:38,243 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac8a5151fbb2de82e81ce0a44f95db14126e113a8aca5d471f6bb3dda343b7d3 [2024-10-23 22:37:38,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:37:38,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:37:38,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:37:38,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:37:38,481 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:37:38,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_38_safe.c-amalgamation.i [2024-10-23 22:37:39,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:37:40,177 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:37:40,178 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_38_safe.c-amalgamation.i [2024-10-23 22:37:40,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e738ec19/3cb84110892a438e82ff80982698192f/FLAG3b6c3b5f6 [2024-10-23 22:37:40,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e738ec19/3cb84110892a438e82ff80982698192f [2024-10-23 22:37:40,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:37:40,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:37:40,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:37:40,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:37:40,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:37:40,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:37:40" (1/1) ... [2024-10-23 22:37:40,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375b52dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:40, skipping insertion in model container [2024-10-23 22:37:40,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:37:40" (1/1) ... [2024-10-23 22:37:40,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:37:40,931 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_38_safe.c-amalgamation.i[63698,63711] [2024-10-23 22:37:41,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:37:41,188 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:37:41,226 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_38_safe.c-amalgamation.i[63698,63711] [2024-10-23 22:37:41,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:37:41,488 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:37:41,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41 WrapperNode [2024-10-23 22:37:41,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:37:41,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:37:41,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:37:41,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:37:41,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,726 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-23 22:37:41,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:37:41,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:37:41,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:37:41,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:37:41,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,823 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 13, 65, 4097, 65, 129, 3, 10, 70, 3]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 0, 64, 4096, 64, 128, 2, 4, 64, 0]. The 10 writes are split as follows [0, 0, 0, 4, 0, 0, 0, 0, 0, 3, 2, 1]. [2024-10-23 22:37:41,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:41,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:42,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:42,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:37:42,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:37:42,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:37:42,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:37:42,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (1/1) ... [2024-10-23 22:37:42,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:37:42,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:42,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 22:37:42,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 22:37:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 22:37:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 22:37:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 22:37:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 22:37:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 22:37:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 22:37:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 22:37:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 22:37:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 22:37:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 22:37:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 22:37:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 22:37:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 22:37:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 22:37:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 22:37:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 22:37:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 22:37:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 22:37:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 22:37:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 22:37:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 22:37:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 22:37:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 22:37:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 22:37:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 22:37:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 22:37:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 22:37:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 22:37:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 22:37:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 22:37:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:37:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:37:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:37:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:37:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:37:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 22:37:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 22:37:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 22:37:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 22:37:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 22:37:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 22:37:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 22:37:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 22:37:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 22:37:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 22:37:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 22:37:42,323 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:37:42,324 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:37:46,599 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-23 22:37:46,599 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:37:46,863 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:37:46,863 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 22:37:46,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:37:46 BoogieIcfgContainer [2024-10-23 22:37:46,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:37:46,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:37:46,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:37:46,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:37:46,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:37:40" (1/3) ... [2024-10-23 22:37:46,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c59904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:37:46, skipping insertion in model container [2024-10-23 22:37:46,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:37:41" (2/3) ... [2024-10-23 22:37:46,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c59904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:37:46, skipping insertion in model container [2024-10-23 22:37:46,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:37:46" (3/3) ... [2024-10-23 22:37:46,873 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_38_safe.c-amalgamation.i [2024-10-23 22:37:46,888 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:37:46,888 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:37:46,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:37:46,953 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;@73b30acc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:37:46,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:37:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:37:46,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:46,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:46,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:46,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:46,970 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-23 22:37:46,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:46,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76878742] [2024-10-23 22:37:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:37:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:47,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76878742] [2024-10-23 22:37:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76878742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:37:47,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:37:47,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:37:47,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343500572] [2024-10-23 22:37:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:37:47,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:37:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:47,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:37:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:37:47,934 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 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) [2024-10-23 22:37:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:48,147 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-23 22:37:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:37:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 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 27 [2024-10-23 22:37:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:48,156 INFO L225 Difference]: With dead ends: 89 [2024-10-23 22:37:48,157 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:37:48,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:37:48,163 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:48,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:37:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:37:48,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:37:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-23 22:37:48,195 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-23 22:37:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:48,195 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-23 22:37:48,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 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) [2024-10-23 22:37:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-23 22:37:48,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:37:48,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:48,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:48,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:37:48,198 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:48,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-23 22:37:48,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:48,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121158942] [2024-10-23 22:37:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:48,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:37:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121158942] [2024-10-23 22:37:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121158942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:37:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:37:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:37:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433092932] [2024-10-23 22:37:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:37:48,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:37:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:37:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:37:48,781 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-10-23 22:37:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:49,046 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-23 22:37:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:37:49,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 27 [2024-10-23 22:37:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:49,048 INFO L225 Difference]: With dead ends: 80 [2024-10-23 22:37:49,049 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:37:49,049 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 [2024-10-23 22:37:49,050 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:49,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:37:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:37:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:37:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-23 22:37:49,059 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-23 22:37:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:49,061 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-23 22:37:49,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-10-23 22:37:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-23 22:37:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:37:49,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:49,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:49,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 22:37:49,063 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:49,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:49,063 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-23 22:37:49,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:49,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021347277] [2024-10-23 22:37:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:49,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:37:49,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021347277] [2024-10-23 22:37:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021347277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:37:49,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:37:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:37:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857416613] [2024-10-23 22:37:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:37:49,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:37:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:37:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:37:49,836 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-10-23 22:37:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:50,108 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-23 22:37:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:37:50,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 27 [2024-10-23 22:37:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:50,110 INFO L225 Difference]: With dead ends: 75 [2024-10-23 22:37:50,110 INFO L226 Difference]: Without dead ends: 45 [2024-10-23 22:37:50,110 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 [2024-10-23 22:37:50,111 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:50,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:37:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-23 22:37:50,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-23 22:37:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:50,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-23 22:37:50,116 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-23 22:37:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:50,116 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-23 22:37:50,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-10-23 22:37:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-23 22:37:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 22:37:50,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:50,117 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:50,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 22:37:50,117 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:50,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-23 22:37:50,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:50,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210261509] [2024-10-23 22:37:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:37:50,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:50,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210261509] [2024-10-23 22:37:50,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210261509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:50,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464444614] [2024-10-23 22:37:50,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:50,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:50,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:50,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:50,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 22:37:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:51,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:37:51,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:37:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:37:52,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:37:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:37:52,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464444614] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:52,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:37:52,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:37:52,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041556164] [2024-10-23 22:37:52,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:37:52,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:37:52,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:37:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:37:52,031 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:52,283 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-23 22:37:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:37:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-10-23 22:37:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:52,284 INFO L225 Difference]: With dead ends: 66 [2024-10-23 22:37:52,284 INFO L226 Difference]: Without dead ends: 46 [2024-10-23 22:37:52,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:37:52,285 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:52,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:37:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-23 22:37:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-23 22:37:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-23 22:37:52,290 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-23 22:37:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:52,290 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-23 22:37:52,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-23 22:37:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-23 22:37:52,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:52,291 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:52,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 22:37:52,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:52,494 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:52,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-23 22:37:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124178573] [2024-10-23 22:37:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:37:53,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124178573] [2024-10-23 22:37:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124178573] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123553817] [2024-10-23 22:37:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:53,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:53,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 22:37:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:54,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:37:54,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:37:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:37:54,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:37:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:37:54,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123553817] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:54,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:37:54,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:37:54,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230382470] [2024-10-23 22:37:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:37:54,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:37:54,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:54,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:37:54,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:37:54,427 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:54,621 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-23 22:37:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:37:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-23 22:37:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:54,622 INFO L225 Difference]: With dead ends: 57 [2024-10-23 22:37:54,622 INFO L226 Difference]: Without dead ends: 47 [2024-10-23 22:37:54,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:37:54,623 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:54,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:37:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-23 22:37:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-23 22:37:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-23 22:37:54,627 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-23 22:37:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:54,627 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-23 22:37:54,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-23 22:37:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 22:37:54,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:54,628 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:54,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 22:37:54,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:54,829 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:54,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-23 22:37:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:54,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618681518] [2024-10-23 22:37:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:37:55,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618681518] [2024-10-23 22:37:55,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618681518] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660318784] [2024-10-23 22:37:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:55,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:55,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:55,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:55,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 22:37:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:56,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 22:37:56,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:37:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:37:56,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:37:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:37:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660318784] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:56,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:37:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:37:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178302221] [2024-10-23 22:37:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:37:56,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:37:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:37:56,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:37:56,398 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:56,572 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-23 22:37:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:37:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-23 22:37:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:56,573 INFO L225 Difference]: With dead ends: 74 [2024-10-23 22:37:56,573 INFO L226 Difference]: Without dead ends: 48 [2024-10-23 22:37:56,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:37:56,574 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:56,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:37:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-23 22:37:56,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-23 22:37:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-23 22:37:56,578 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-23 22:37:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:56,578 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-23 22:37:56,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-23 22:37:56,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-23 22:37:56,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:56,579 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:56,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 22:37:56,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:56,779 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:56,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-23 22:37:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691141065] [2024-10-23 22:37:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:56,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:37:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691141065] [2024-10-23 22:37:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691141065] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121651873] [2024-10-23 22:37:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:57,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:57,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:57,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:57,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 22:37:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:58,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:37:58,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:37:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:37:58,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:37:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:37:58,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121651873] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:37:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:37:58,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073639643] [2024-10-23 22:37:58,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:37:58,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:37:58,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:37:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:37:58,252 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:58,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:58,475 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-23 22:37:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:37:58,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-23 22:37:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:58,476 INFO L225 Difference]: With dead ends: 64 [2024-10-23 22:37:58,476 INFO L226 Difference]: Without dead ends: 49 [2024-10-23 22:37:58,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:37:58,476 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:58,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:37:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-23 22:37:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-23 22:37:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 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) [2024-10-23 22:37:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-23 22:37:58,480 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-23 22:37:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:58,481 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-23 22:37:58,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-23 22:37:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 22:37:58,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:58,482 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:58,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 22:37:58,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:58,682 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:58,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-23 22:37:58,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:58,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894615246] [2024-10-23 22:37:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:37:59,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:59,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894615246] [2024-10-23 22:37:59,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894615246] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487494171] [2024-10-23 22:37:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:59,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:59,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:59,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 22:37:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:00,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:38:00,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:38:00,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:38:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487494171] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:00,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:38:00,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:38:00,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65322419] [2024-10-23 22:38:00,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:38:00,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:38:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:38:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:38:00,054 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:00,222 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-23 22:38:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:38:00,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-23 22:38:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:00,223 INFO L225 Difference]: With dead ends: 54 [2024-10-23 22:38:00,223 INFO L226 Difference]: Without dead ends: 50 [2024-10-23 22:38:00,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:38:00,224 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:00,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:38:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-23 22:38:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-23 22:38:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-23 22:38:00,228 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-23 22:38:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:00,228 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-23 22:38:00,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-23 22:38:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 22:38:00,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:00,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:00,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:00,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:00,430 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:00,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-23 22:38:00,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:00,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084625563] [2024-10-23 22:38:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:38:00,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084625563] [2024-10-23 22:38:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084625563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122061095] [2024-10-23 22:38:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:00,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:00,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:00,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:00,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 22:38:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:01,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 22:38:01,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:38:01,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:38:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122061095] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:38:01,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:38:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-23 22:38:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855858132] [2024-10-23 22:38:01,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:38:01,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 22:38:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:01,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 22:38:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:38:01,863 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:02,159 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-10-23 22:38:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 22:38:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-23 22:38:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:02,160 INFO L225 Difference]: With dead ends: 95 [2024-10-23 22:38:02,160 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 22:38:02,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:38:02,161 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:02,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:38:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 22:38:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 22:38:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-23 22:38:02,165 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 43 [2024-10-23 22:38:02,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:02,165 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-23 22:38:02,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-23 22:38:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-23 22:38:02,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:02,166 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:02,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:02,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:02,373 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:02,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:02,373 INFO L85 PathProgramCache]: Analyzing trace with hash 528894503, now seen corresponding path program 2 times [2024-10-23 22:38:02,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:02,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497596288] [2024-10-23 22:38:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:02,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:38:03,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:03,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497596288] [2024-10-23 22:38:03,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497596288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:03,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185260117] [2024-10-23 22:38:03,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:38:03,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:03,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:03,122 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:03,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 22:38:03,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:38:03,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:38:03,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 5358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-23 22:38:03,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:38:03,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-23 22:38:04,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185260117] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:04,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:38:04,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-23 22:38:04,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172292880] [2024-10-23 22:38:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:38:04,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:38:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:38:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:38:04,009 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:04,236 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-10-23 22:38:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:38:04,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-23 22:38:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:04,237 INFO L225 Difference]: With dead ends: 70 [2024-10-23 22:38:04,237 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 22:38:04,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:38:04,239 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:04,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:38:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 22:38:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 22:38:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-23 22:38:04,250 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 53 [2024-10-23 22:38:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:04,250 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-23 22:38:04,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-23 22:38:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-23 22:38:04,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:04,251 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:04,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 22:38:04,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:04,452 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:04,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 1 times [2024-10-23 22:38:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:04,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27443635] [2024-10-23 22:38:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 22:38:05,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:05,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27443635] [2024-10-23 22:38:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27443635] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:05,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143742369] [2024-10-23 22:38:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:05,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:05,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:05,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:05,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 22:38:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:05,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:38:05,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:38:05,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 22:38:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143742369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:38:05,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:38:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-23 22:38:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543294270] [2024-10-23 22:38:05,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:38:05,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 22:38:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:05,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 22:38:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:38:05,940 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:06,274 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-23 22:38:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 22:38:06,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-23 22:38:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:06,275 INFO L225 Difference]: With dead ends: 116 [2024-10-23 22:38:06,275 INFO L226 Difference]: Without dead ends: 71 [2024-10-23 22:38:06,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-23 22:38:06,275 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:06,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 192 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:38:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-23 22:38:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-23 22:38:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-23 22:38:06,282 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-23 22:38:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:06,282 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-23 22:38:06,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-23 22:38:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-23 22:38:06,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:06,283 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:06,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 22:38:06,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 22:38:06,484 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:06,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 2 times [2024-10-23 22:38:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:06,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182477534] [2024-10-23 22:38:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:38:07,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182477534] [2024-10-23 22:38:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182477534] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941195454] [2024-10-23 22:38:07,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:38:07,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:07,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:07,202 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:07,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 22:38:08,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:38:08,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:38:08,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 5437 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-23 22:38:08,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:38:08,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:38:08,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941195454] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:38:08,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:38:08,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-23 22:38:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283169840] [2024-10-23 22:38:08,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:38:08,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-23 22:38:08,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:08,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-23 22:38:08,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-23 22:38:08,133 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:08,420 INFO L93 Difference]: Finished difference Result 126 states and 167 transitions. [2024-10-23 22:38:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 22:38:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 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 66 [2024-10-23 22:38:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:08,421 INFO L225 Difference]: With dead ends: 126 [2024-10-23 22:38:08,421 INFO L226 Difference]: Without dead ends: 72 [2024-10-23 22:38:08,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-23 22:38:08,422 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:08,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:38:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-23 22:38:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-23 22:38:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2024-10-23 22:38:08,425 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 66 [2024-10-23 22:38:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:08,425 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2024-10-23 22:38:08,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2024-10-23 22:38:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-23 22:38:08,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:08,426 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:08,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:08,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:08,627 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:08,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:08,627 INFO L85 PathProgramCache]: Analyzing trace with hash -789509461, now seen corresponding path program 3 times [2024-10-23 22:38:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:08,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8817304] [2024-10-23 22:38:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:08,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 22:38:09,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8817304] [2024-10-23 22:38:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8817304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011858693] [2024-10-23 22:38:09,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:38:09,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:09,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:09,462 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:09,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 22:38:10,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 22:38:10,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:38:10,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-23 22:38:10,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 22:38:10,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-23 22:38:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011858693] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:38:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:38:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945996715] [2024-10-23 22:38:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:38:10,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:38:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:38:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:38:10,443 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:10,616 INFO L93 Difference]: Finished difference Result 106 states and 140 transitions. [2024-10-23 22:38:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:38:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-23 22:38:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:10,618 INFO L225 Difference]: With dead ends: 106 [2024-10-23 22:38:10,618 INFO L226 Difference]: Without dead ends: 75 [2024-10-23 22:38:10,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:38:10,619 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:10,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:38:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-23 22:38:10,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-10-23 22:38:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2024-10-23 22:38:10,624 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 67 [2024-10-23 22:38:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:10,624 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2024-10-23 22:38:10,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2024-10-23 22:38:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-23 22:38:10,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:10,625 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:10,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:10,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 22:38:10,825 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:10,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1264911644, now seen corresponding path program 1 times [2024-10-23 22:38:10,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:10,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208318218] [2024-10-23 22:38:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:10,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-23 22:38:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208318218] [2024-10-23 22:38:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208318218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977707755] [2024-10-23 22:38:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:11,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:11,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:11,613 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:11,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 22:38:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:12,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 5462 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:38:12,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 22:38:12,514 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:38:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977707755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:38:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 22:38:12,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-23 22:38:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446036763] [2024-10-23 22:38:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:38:12,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:38:12,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:38:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:38:12,515 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:12,673 INFO L93 Difference]: Finished difference Result 129 states and 171 transitions. [2024-10-23 22:38:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:38:12,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 70 [2024-10-23 22:38:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:12,674 INFO L225 Difference]: With dead ends: 129 [2024-10-23 22:38:12,674 INFO L226 Difference]: Without dead ends: 76 [2024-10-23 22:38:12,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:38:12,675 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:12,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:38:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-23 22:38:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-10-23 22:38:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 73 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2024-10-23 22:38:12,678 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 70 [2024-10-23 22:38:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:12,679 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2024-10-23 22:38:12,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:12,679 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2024-10-23 22:38:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-23 22:38:12,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:12,680 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:12,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-23 22:38:12,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 22:38:12,880 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:12,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:12,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1148367932, now seen corresponding path program 1 times [2024-10-23 22:38:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:12,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548559775] [2024-10-23 22:38:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-23 22:38:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548559775] [2024-10-23 22:38:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548559775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421867626] [2024-10-23 22:38:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:13,611 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:13,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 22:38:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:14,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:38:14,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-23 22:38:14,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 22:38:14,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421867626] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:14,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:38:14,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:38:14,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399222661] [2024-10-23 22:38:14,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:38:14,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:38:14,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:38:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:38:14,613 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:14,785 INFO L93 Difference]: Finished difference Result 106 states and 139 transitions. [2024-10-23 22:38:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:38:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-23 22:38:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:14,786 INFO L225 Difference]: With dead ends: 106 [2024-10-23 22:38:14,786 INFO L226 Difference]: Without dead ends: 75 [2024-10-23 22:38:14,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:38:14,788 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:14,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:38:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-23 22:38:14,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-23 22:38:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-10-23 22:38:14,793 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 73 [2024-10-23 22:38:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:14,793 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-10-23 22:38:14,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-10-23 22:38:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-23 22:38:14,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:14,794 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:14,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:14,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 22:38:14,995 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:14,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:14,995 INFO L85 PathProgramCache]: Analyzing trace with hash -856805777, now seen corresponding path program 1 times [2024-10-23 22:38:14,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:14,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063653653] [2024-10-23 22:38:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:14,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-23 22:38:15,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:15,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063653653] [2024-10-23 22:38:15,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063653653] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:15,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282132416] [2024-10-23 22:38:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:15,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:15,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:15,675 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:15,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 22:38:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:16,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 5479 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:38:16,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-23 22:38:16,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-23 22:38:16,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282132416] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:16,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:38:16,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:38:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188349768] [2024-10-23 22:38:16,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:38:16,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:38:16,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:38:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:38:16,614 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:16,833 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2024-10-23 22:38:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:38:16,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-23 22:38:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:16,834 INFO L225 Difference]: With dead ends: 86 [2024-10-23 22:38:16,834 INFO L226 Difference]: Without dead ends: 76 [2024-10-23 22:38:16,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:38:16,835 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:16,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:38:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-23 22:38:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-23 22:38:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 75 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2024-10-23 22:38:16,846 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 74 [2024-10-23 22:38:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:16,846 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2024-10-23 22:38:16,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2024-10-23 22:38:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-23 22:38:16,847 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:16,847 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:16,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:17,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 22:38:17,048 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:17,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 859271824, now seen corresponding path program 1 times [2024-10-23 22:38:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:17,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031880718] [2024-10-23 22:38:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-23 22:38:17,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:17,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031880718] [2024-10-23 22:38:17,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031880718] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:17,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149355221] [2024-10-23 22:38:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:17,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:17,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:17,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:17,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 22:38:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:18,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 5482 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-23 22:38:18,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 22:38:18,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-23 22:38:18,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149355221] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:18,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:38:18,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 9] total 16 [2024-10-23 22:38:18,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298290398] [2024-10-23 22:38:18,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:38:18,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:38:18,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:18,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:38:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 22:38:18,676 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:18,857 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2024-10-23 22:38:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:38:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-23 22:38:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:18,858 INFO L225 Difference]: With dead ends: 133 [2024-10-23 22:38:18,858 INFO L226 Difference]: Without dead ends: 77 [2024-10-23 22:38:18,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 22:38:18,858 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:18,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:38:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-23 22:38:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-23 22:38:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 76 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2024-10-23 22:38:18,862 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 75 [2024-10-23 22:38:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:18,862 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2024-10-23 22:38:18,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2024-10-23 22:38:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-23 22:38:18,863 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:18,863 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:18,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:19,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:19,064 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:19,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1958375657, now seen corresponding path program 1 times [2024-10-23 22:38:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:19,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767216993] [2024-10-23 22:38:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 22:38:19,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767216993] [2024-10-23 22:38:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767216993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662149522] [2024-10-23 22:38:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:19,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:19,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:19,757 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:19,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-23 22:38:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:20,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 5485 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 22:38:20,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 22:38:20,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 22:38:20,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662149522] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:38:20,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:38:20,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-23 22:38:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053976750] [2024-10-23 22:38:20,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:38:20,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-23 22:38:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-23 22:38:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-23 22:38:20,720 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:21,255 INFO L93 Difference]: Finished difference Result 153 states and 206 transitions. [2024-10-23 22:38:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-23 22:38:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 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 76 [2024-10-23 22:38:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:21,256 INFO L225 Difference]: With dead ends: 153 [2024-10-23 22:38:21,256 INFO L226 Difference]: Without dead ends: 96 [2024-10-23 22:38:21,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-10-23 22:38:21,256 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 51 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:21,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 432 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 22:38:21,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-23 22:38:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-10-23 22:38:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.305263157894737) internal successors, (124), 95 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2024-10-23 22:38:21,261 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 76 [2024-10-23 22:38:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:21,261 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2024-10-23 22:38:21,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2024-10-23 22:38:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-23 22:38:21,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:21,262 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:21,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:21,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 22:38:21,462 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:21,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1692038032, now seen corresponding path program 2 times [2024-10-23 22:38:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662625141] [2024-10-23 22:38:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:21,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-23 22:38:22,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662625141] [2024-10-23 22:38:22,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662625141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901655921] [2024-10-23 22:38:22,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:38:22,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:22,504 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:22,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-23 22:38:23,363 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:38:23,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:38:23,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 5596 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-23 22:38:23,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-10-23 22:38:23,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-10-23 22:38:23,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901655921] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:38:23,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:38:23,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 6] total 26 [2024-10-23 22:38:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150497286] [2024-10-23 22:38:23,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:38:23,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-23 22:38:23,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-23 22:38:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-10-23 22:38:23,595 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:24,445 INFO L93 Difference]: Finished difference Result 182 states and 240 transitions. [2024-10-23 22:38:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-23 22:38:24,445 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-23 22:38:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:24,446 INFO L225 Difference]: With dead ends: 182 [2024-10-23 22:38:24,446 INFO L226 Difference]: Without dead ends: 103 [2024-10-23 22:38:24,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-10-23 22:38:24,447 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 30 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:24,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 889 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 22:38:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-23 22:38:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-23 22:38:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.29) internal successors, (129), 100 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 129 transitions. [2024-10-23 22:38:24,451 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 129 transitions. Word has length 95 [2024-10-23 22:38:24,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:24,451 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 129 transitions. [2024-10-23 22:38:24,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 129 transitions. [2024-10-23 22:38:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-23 22:38:24,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:24,452 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:24,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:24,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:24,653 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:24,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1832176982, now seen corresponding path program 3 times [2024-10-23 22:38:24,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981442772] [2024-10-23 22:38:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 22:38:25,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:25,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981442772] [2024-10-23 22:38:25,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981442772] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:25,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224786111] [2024-10-23 22:38:25,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:38:25,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:25,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:25,801 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:25,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-23 22:38:26,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 22:38:26,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:38:26,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-23 22:38:26,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-10-23 22:38:26,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-10-23 22:38:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224786111] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:38:27,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:38:27,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 6] total 26 [2024-10-23 22:38:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237062807] [2024-10-23 22:38:27,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:38:27,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-23 22:38:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-23 22:38:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2024-10-23 22:38:27,077 INFO L87 Difference]: Start difference. First operand 101 states and 129 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:27,937 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2024-10-23 22:38:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-23 22:38:27,938 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 100 [2024-10-23 22:38:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:27,938 INFO L225 Difference]: With dead ends: 158 [2024-10-23 22:38:27,939 INFO L226 Difference]: Without dead ends: 122 [2024-10-23 22:38:27,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-10-23 22:38:27,939 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 58 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:27,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 806 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 22:38:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-23 22:38:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2024-10-23 22:38:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2956521739130435) internal successors, (149), 115 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 149 transitions. [2024-10-23 22:38:27,945 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 149 transitions. Word has length 100 [2024-10-23 22:38:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:27,945 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 149 transitions. [2024-10-23 22:38:27,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 149 transitions. [2024-10-23 22:38:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-23 22:38:27,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:27,946 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:27,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:28,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:28,147 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:28,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1725134109, now seen corresponding path program 4 times [2024-10-23 22:38:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:28,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141046527] [2024-10-23 22:38:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:28,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 22:38:29,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141046527] [2024-10-23 22:38:29,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141046527] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441007418] [2024-10-23 22:38:29,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 22:38:29,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:29,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:29,443 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:29,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-23 22:38:30,341 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 22:38:30,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:38:30,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 5655 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 22:38:30,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:38:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-10-23 22:38:30,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:38:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-10-23 22:38:30,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441007418] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:38:30,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:38:30,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 7] total 25 [2024-10-23 22:38:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547938953] [2024-10-23 22:38:30,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:38:30,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-23 22:38:30,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:38:30,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-23 22:38:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-10-23 22:38:30,555 INFO L87 Difference]: Start difference. First operand 116 states and 149 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:38:31,428 INFO L93 Difference]: Finished difference Result 187 states and 249 transitions. [2024-10-23 22:38:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-23 22:38:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-23 22:38:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:38:31,429 INFO L225 Difference]: With dead ends: 187 [2024-10-23 22:38:31,429 INFO L226 Difference]: Without dead ends: 139 [2024-10-23 22:38:31,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-10-23 22:38:31,430 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 69 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 22:38:31,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 907 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 22:38:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-23 22:38:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2024-10-23 22:38:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3014705882352942) internal successors, (177), 136 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2024-10-23 22:38:31,436 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 107 [2024-10-23 22:38:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:38:31,436 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2024-10-23 22:38:31,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:38:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2024-10-23 22:38:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-23 22:38:31,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:38:31,437 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:38:31,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-23 22:38:31,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:31,638 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:38:31,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:38:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1699796841, now seen corresponding path program 5 times [2024-10-23 22:38:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:38:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512676884] [2024-10-23 22:38:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:38:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:38:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:38:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-23 22:38:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:38:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512676884] [2024-10-23 22:38:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512676884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:38:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535399540] [2024-10-23 22:38:32,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 22:38:32,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:38:32,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:38:32,945 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:38:32,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process