./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/vdp_11_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_11_safe.c-amalgamation.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 9acfaab61d92b9f1cdd4ab6eebe5b2c5b9d1ce96ee555bd2c1fe617fbf99e1c0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:32:05,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:32:05,685 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:32:05,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:32:05,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:32:05,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:32:05,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:32:05,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:32:05,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:32:05,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:32:05,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:32:05,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:32:05,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:32:05,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:32:05,732 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:32:05,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:32:05,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:32:05,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:32:05,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:32:05,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:32:05,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:32:05,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:32:05,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:32:05,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:32:05,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:32:05,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:32:05,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:32:05,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:32:05,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:32:05,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:32:05,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:32:05,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:32:05,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:32:05,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:32:05,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:32:05,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:32:05,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:32:05,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:32:05,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:32:05,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:32:05,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:32:05,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:32:05,740 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9acfaab61d92b9f1cdd4ab6eebe5b2c5b9d1ce96ee555bd2c1fe617fbf99e1c0 [2024-10-11 01:32:05,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:32:06,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:32:06,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:32:06,027 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:32:06,027 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:32:06,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_11_safe.c-amalgamation.i [2024-10-11 01:32:07,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:32:07,808 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:32:07,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_11_safe.c-amalgamation.i [2024-10-11 01:32:07,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/61891d0e8/46108463b6db4898ae3eab9f5cfa0973/FLAG5339cb44b [2024-10-11 01:32:07,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/61891d0e8/46108463b6db4898ae3eab9f5cfa0973 [2024-10-11 01:32:07,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:32:07,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:32:07,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:32:07,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:32:07,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:32:07,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:32:07" (1/1) ... [2024-10-11 01:32:07,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41915deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:07, skipping insertion in model container [2024-10-11 01:32:07,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:32:07" (1/1) ... [2024-10-11 01:32:07,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:32:08,650 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/vdp_11_safe.c-amalgamation.i[63644,63657] [2024-10-11 01:32:08,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:32:08,939 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:32:08,999 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/vdp_11_safe.c-amalgamation.i[63644,63657] [2024-10-11 01:32:09,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:32:09,261 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:32:09,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09 WrapperNode [2024-10-11 01:32:09,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:32:09,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:32:09,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:32:09,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:32:09,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,424 INFO L138 Inliner]: procedures = 619, calls = 1412, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1680 [2024-10-11 01:32:09,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:32:09,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:32:09,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:32:09,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:32:09,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,553 INFO L175 MemorySlicer]: Split 1388 memory accesses to 12 slices as follows [2, 7, 97, 33, 1025, 33, 97, 4, 38, 36, 6, 10]. 74 percent of accesses are in the largest equivalence class. The 1356 initializations are split as follows [2, 7, 96, 32, 1024, 32, 96, 3, 32, 32, 0, 0]. The 8 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 1, 3]. [2024-10-11 01:32:09,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:32:09,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:32:09,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:32:09,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:32:09,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (1/1) ... [2024-10-11 01:32:09,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:32:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:09,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 01:32:09,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 01:32:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-11 01:32:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-11 01:32:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-11 01:32:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-11 01:32:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-11 01:32:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-11 01:32:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-11 01:32:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-11 01:32:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-11 01:32:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-11 01:32:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-11 01:32:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-11 01:32:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-11 01:32:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-11 01:32:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-11 01:32:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-11 01:32:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-11 01:32:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-11 01:32:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-11 01:32:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-11 01:32:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-11 01:32:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-11 01:32:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-11 01:32:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-11 01:32:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-11 01:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-11 01:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-11 01:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-11 01:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-11 01:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-11 01:32:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:32:09,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 01:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 01:32:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 01:32:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 01:32:09,981 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:32:09,983 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:32:11,484 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-10-11 01:32:11,485 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:32:11,635 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:32:11,636 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-11 01:32:11,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:32:11 BoogieIcfgContainer [2024-10-11 01:32:11,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:32:11,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:32:11,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:32:11,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:32:11,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:32:07" (1/3) ... [2024-10-11 01:32:11,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ff3443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:32:11, skipping insertion in model container [2024-10-11 01:32:11,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:32:09" (2/3) ... [2024-10-11 01:32:11,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ff3443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:32:11, skipping insertion in model container [2024-10-11 01:32:11,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:32:11" (3/3) ... [2024-10-11 01:32:11,646 INFO L112 eAbstractionObserver]: Analyzing ICFG vdp_11_safe.c-amalgamation.i [2024-10-11 01:32:11,664 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:32:11,664 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:32:11,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:32:11,744 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;@4f7cb57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:32:11,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:32:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:32:11,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:11,756 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] [2024-10-11 01:32:11,756 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:11,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2012850619, now seen corresponding path program 1 times [2024-10-11 01:32:11,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:11,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125249482] [2024-10-11 01:32:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:11,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:32:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125249482] [2024-10-11 01:32:12,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125249482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:32:12,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:32:12,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:32:12,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099265288] [2024-10-11 01:32:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:12,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 01:32:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 01:32:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:32:12,346 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:12,492 INFO L93 Difference]: Finished difference Result 93 states and 159 transitions. [2024-10-11 01:32:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 01:32:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-11 01:32:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:12,503 INFO L225 Difference]: With dead ends: 93 [2024-10-11 01:32:12,503 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 01:32:12,507 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 [2024-10-11 01:32:12,515 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:12,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 01:32:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-11 01:32:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 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) [2024-10-11 01:32:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2024-10-11 01:32:12,552 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 29 [2024-10-11 01:32:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:12,554 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2024-10-11 01:32:12,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2024-10-11 01:32:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:32:12,556 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:12,556 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] [2024-10-11 01:32:12,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:32:12,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:12,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2047546805, now seen corresponding path program 1 times [2024-10-11 01:32:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984007224] [2024-10-11 01:32:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:32:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:12,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984007224] [2024-10-11 01:32:12,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984007224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:32:12,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:32:12,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:32:12,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672520682] [2024-10-11 01:32:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:12,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:32:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:12,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:32:12,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:32:12,877 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:13,011 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2024-10-11 01:32:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:32:13,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-11 01:32:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:13,014 INFO L225 Difference]: With dead ends: 84 [2024-10-11 01:32:13,014 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 01:32:13,014 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 [2024-10-11 01:32:13,015 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:13,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:13,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 01:32:13,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-11 01:32:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 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) [2024-10-11 01:32:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2024-10-11 01:32:13,026 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 29 [2024-10-11 01:32:13,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:13,026 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2024-10-11 01:32:13,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2024-10-11 01:32:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:32:13,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:13,029 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] [2024-10-11 01:32:13,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:32:13,029 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:13,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:13,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2028565773, now seen corresponding path program 1 times [2024-10-11 01:32:13,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:13,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093064854] [2024-10-11 01:32:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:13,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:32:13,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093064854] [2024-10-11 01:32:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093064854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:32:13,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:32:13,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 01:32:13,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659517715] [2024-10-11 01:32:13,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:13,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:32:13,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:13,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:32:13,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:32:13,439 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:13,597 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2024-10-11 01:32:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:32:13,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-11 01:32:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:13,602 INFO L225 Difference]: With dead ends: 52 [2024-10-11 01:32:13,602 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 01:32:13,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:32:13,604 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:13,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 129 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 01:32:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-11 01:32:13,613 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) [2024-10-11 01:32:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-11 01:32:13,614 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 29 [2024-10-11 01:32:13,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:13,617 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-11 01:32:13,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-11 01:32:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:32:13,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:13,619 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] [2024-10-11 01:32:13,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:32:13,619 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:13,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:13,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2026718731, now seen corresponding path program 1 times [2024-10-11 01:32:13,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:13,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884597128] [2024-10-11 01:32:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:13,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:32:14,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:14,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884597128] [2024-10-11 01:32:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884597128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:32:14,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:32:14,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:32:14,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751778290] [2024-10-11 01:32:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:14,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:32:14,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:32:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:32:14,044 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:14,171 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2024-10-11 01:32:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:32:14,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-11 01:32:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:14,175 INFO L225 Difference]: With dead ends: 76 [2024-10-11 01:32:14,175 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 01:32:14,176 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 [2024-10-11 01:32:14,177 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:14,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 01:32:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-10-11 01:32:14,187 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) [2024-10-11 01:32:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-11 01:32:14,188 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 29 [2024-10-11 01:32:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:14,188 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-11 01:32:14,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-11 01:32:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 01:32:14,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:14,191 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] [2024-10-11 01:32:14,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 01:32:14,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:14,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2060179138, now seen corresponding path program 1 times [2024-10-11 01:32:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:14,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592590963] [2024-10-11 01:32:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:14,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:32:14,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592590963] [2024-10-11 01:32:14,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592590963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414507679] [2024-10-11 01:32:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:14,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:14,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:14,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 01:32:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:15,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 01:32:15,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:32:15,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:32:15,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414507679] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:15,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:32:15,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 01:32:15,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18798662] [2024-10-11 01:32:15,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:15,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:32:15,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:32:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:32:15,270 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:15,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:15,394 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2024-10-11 01:32:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:32:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-11 01:32:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:15,396 INFO L225 Difference]: With dead ends: 65 [2024-10-11 01:32:15,396 INFO L226 Difference]: Without dead ends: 48 [2024-10-11 01:32:15,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:32:15,398 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:15,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:15,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-11 01:32:15,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-11 01:32:15,407 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) [2024-10-11 01:32:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-11 01:32:15,408 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2024-10-11 01:32:15,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:15,408 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-11 01:32:15,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:15,408 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-11 01:32:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:32:15,409 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:15,409 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] [2024-10-11 01:32:15,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:15,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:15,610 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:15,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:15,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1389601723, now seen corresponding path program 1 times [2024-10-11 01:32:15,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250899954] [2024-10-11 01:32:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:32:16,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:16,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250899954] [2024-10-11 01:32:16,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250899954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:16,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613247836] [2024-10-11 01:32:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:16,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:16,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:16,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:16,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 01:32:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:16,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:32:16,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:32:16,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:32:16,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613247836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:32:16,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:32:16,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-11 01:32:16,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543298412] [2024-10-11 01:32:16,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:16,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:32:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:32:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 01:32:16,540 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:16,641 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-11 01:32:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:32:16,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-11 01:32:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:16,642 INFO L225 Difference]: With dead ends: 86 [2024-10-11 01:32:16,642 INFO L226 Difference]: Without dead ends: 53 [2024-10-11 01:32:16,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 01:32:16,643 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:16,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-11 01:32:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-10-11 01:32:16,647 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) [2024-10-11 01:32:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-11 01:32:16,648 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 35 [2024-10-11 01:32:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:16,648 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-11 01:32:16,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-11 01:32:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 01:32:16,649 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:16,649 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] [2024-10-11 01:32:16,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 01:32:16,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:16,854 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:16,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:16,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1232765958, now seen corresponding path program 1 times [2024-10-11 01:32:16,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:16,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619790770] [2024-10-11 01:32:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:16,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:32:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:17,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619790770] [2024-10-11 01:32:17,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619790770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:17,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841157064] [2024-10-11 01:32:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:17,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:17,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:17,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 01:32:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:17,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:32:17,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:32:17,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:32:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841157064] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:17,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:32:17,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 01:32:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801705745] [2024-10-11 01:32:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:17,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:32:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:32:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:32:17,753 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:17,861 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-11 01:32:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:32:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-11 01:32:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:17,862 INFO L225 Difference]: With dead ends: 72 [2024-10-11 01:32:17,862 INFO L226 Difference]: Without dead ends: 50 [2024-10-11 01:32:17,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:32:17,863 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:17,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-11 01:32:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-11 01:32:17,874 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) [2024-10-11 01:32:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-11 01:32:17,874 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 38 [2024-10-11 01:32:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:17,875 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-11 01:32:17,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-11 01:32:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 01:32:17,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:17,876 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:17,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:18,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:18,077 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:18,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash 112245872, now seen corresponding path program 1 times [2024-10-11 01:32:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599222863] [2024-10-11 01:32:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:32:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599222863] [2024-10-11 01:32:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599222863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030115572] [2024-10-11 01:32:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:18,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:18,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:18,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:18,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 01:32:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:18,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:32:18,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:32:18,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:32:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030115572] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:19,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:32:19,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 01:32:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932628139] [2024-10-11 01:32:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:19,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:32:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:32:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:32:19,002 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:19,081 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2024-10-11 01:32:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:32:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-11 01:32:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:19,082 INFO L225 Difference]: With dead ends: 62 [2024-10-11 01:32:19,082 INFO L226 Difference]: Without dead ends: 51 [2024-10-11 01:32:19,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:32:19,083 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:19,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-11 01:32:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-11 01:32:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-11 01:32:19,088 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-10-11 01:32:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:19,088 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-11 01:32:19,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-11 01:32:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-11 01:32:19,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:19,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:19,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 01:32:19,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 01:32:19,291 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:19,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1541916076, now seen corresponding path program 1 times [2024-10-11 01:32:19,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:19,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695733268] [2024-10-11 01:32:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:32:19,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:19,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695733268] [2024-10-11 01:32:19,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695733268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:19,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162933920] [2024-10-11 01:32:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:19,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:19,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:19,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:19,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 01:32:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:20,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 01:32:20,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:32:20,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:32:20,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162933920] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:32:20,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:32:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 01:32:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425623767] [2024-10-11 01:32:20,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:32:20,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 01:32:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 01:32:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:32:20,254 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:20,405 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-10-11 01:32:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 01:32:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-11 01:32:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:20,406 INFO L225 Difference]: With dead ends: 90 [2024-10-11 01:32:20,406 INFO L226 Difference]: Without dead ends: 60 [2024-10-11 01:32:20,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:32:20,407 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:20,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:20,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-11 01:32:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-11 01:32:20,414 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) [2024-10-11 01:32:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-11 01:32:20,416 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 44 [2024-10-11 01:32:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:20,417 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-11 01:32:20,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-11 01:32:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 01:32:20,418 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:20,418 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 01:32:20,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:20,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:20,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:20,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1917566771, now seen corresponding path program 2 times [2024-10-11 01:32:20,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:20,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61072892] [2024-10-11 01:32:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:20,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:32:21,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:21,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61072892] [2024-10-11 01:32:21,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61072892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:21,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417496058] [2024-10-11 01:32:21,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:32:21,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:21,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:21,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:21,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 01:32:21,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:32:21,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:32:21,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:32:21,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:32:21,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-11 01:32:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417496058] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:32:21,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:32:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-11 01:32:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116598843] [2024-10-11 01:32:21,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:32:21,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 01:32:21,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 01:32:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 01:32:21,658 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:21,901 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2024-10-11 01:32:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 01:32:21,901 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-11 01:32:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:21,902 INFO L225 Difference]: With dead ends: 104 [2024-10-11 01:32:21,902 INFO L226 Difference]: Without dead ends: 74 [2024-10-11 01:32:21,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-11 01:32:21,903 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:21,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 345 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:32:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-11 01:32:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-10-11 01:32:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 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) [2024-10-11 01:32:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-10-11 01:32:21,909 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 53 [2024-10-11 01:32:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:21,910 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-10-11 01:32:21,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-10-11 01:32:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 01:32:21,911 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:21,911 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-11 01:32:21,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 01:32:22,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 01:32:22,112 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:22,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1485773431, now seen corresponding path program 3 times [2024-10-11 01:32:22,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:22,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723500996] [2024-10-11 01:32:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:22,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-11 01:32:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723500996] [2024-10-11 01:32:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723500996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454351084] [2024-10-11 01:32:22,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:32:22,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:22,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:22,612 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:22,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 01:32:23,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:32:23,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:32:23,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:32:23,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-11 01:32:23,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-11 01:32:23,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454351084] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:32:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 13 [2024-10-11 01:32:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637582] [2024-10-11 01:32:23,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:23,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:32:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:23,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:32:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:32:23,172 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:23,260 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2024-10-11 01:32:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:32:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-11 01:32:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:23,261 INFO L225 Difference]: With dead ends: 89 [2024-10-11 01:32:23,262 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 01:32:23,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:32:23,262 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:23,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 01:32:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-11 01:32:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 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) [2024-10-11 01:32:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-11 01:32:23,269 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2024-10-11 01:32:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:23,269 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-11 01:32:23,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:23,269 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-11 01:32:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 01:32:23,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:23,270 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-11 01:32:23,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 01:32:23,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:23,471 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:23,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1609775226, now seen corresponding path program 1 times [2024-10-11 01:32:23,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181003985] [2024-10-11 01:32:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 01:32:24,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181003985] [2024-10-11 01:32:24,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181003985] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004045176] [2024-10-11 01:32:24,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:24,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:24,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:24,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:24,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 01:32:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:24,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:32:24,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:32:24,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-11 01:32:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004045176] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:32:24,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:32:24,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-11 01:32:24,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954370266] [2024-10-11 01:32:24,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:32:24,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 01:32:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 01:32:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-11 01:32:24,738 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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) [2024-10-11 01:32:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:25,171 INFO L93 Difference]: Finished difference Result 136 states and 186 transitions. [2024-10-11 01:32:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 01:32:25,172 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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) Word has length 68 [2024-10-11 01:32:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:25,173 INFO L225 Difference]: With dead ends: 136 [2024-10-11 01:32:25,173 INFO L226 Difference]: Without dead ends: 96 [2024-10-11 01:32:25,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:32:25,174 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 54 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:25,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 438 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:32:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-11 01:32:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-10-11 01:32:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 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) [2024-10-11 01:32:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2024-10-11 01:32:25,186 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 68 [2024-10-11 01:32:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:25,186 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2024-10-11 01:32:25,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 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) [2024-10-11 01:32:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2024-10-11 01:32:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-11 01:32:25,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:25,188 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:25,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:25,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 01:32:25,389 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:25,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1069416577, now seen corresponding path program 2 times [2024-10-11 01:32:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287517693] [2024-10-11 01:32:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-11 01:32:26,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:26,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287517693] [2024-10-11 01:32:26,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287517693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738501315] [2024-10-11 01:32:26,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:32:26,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:26,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:26,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:26,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 01:32:26,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:32:26,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:32:26,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 01:32:26,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-11 01:32:26,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:32:27,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738501315] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:32:27,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:32:27,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-11 01:32:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797388021] [2024-10-11 01:32:27,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:32:27,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 01:32:27,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:27,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 01:32:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:32:27,039 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 24 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:27,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:27,766 INFO L93 Difference]: Finished difference Result 176 states and 240 transitions. [2024-10-11 01:32:27,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 01:32:27,767 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-10-11 01:32:27,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:27,768 INFO L225 Difference]: With dead ends: 176 [2024-10-11 01:32:27,768 INFO L226 Difference]: Without dead ends: 118 [2024-10-11 01:32:27,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:32:27,769 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 74 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:27,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 707 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:32:27,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-11 01:32:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-10-11 01:32:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 117 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2024-10-11 01:32:27,786 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 89 [2024-10-11 01:32:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:27,786 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2024-10-11 01:32:27,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2024-10-11 01:32:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-11 01:32:27,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:27,788 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:27,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:27,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:27,989 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:27,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1295709697, now seen corresponding path program 3 times [2024-10-11 01:32:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:27,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026269766] [2024-10-11 01:32:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:27,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-11 01:32:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026269766] [2024-10-11 01:32:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026269766] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627519761] [2024-10-11 01:32:29,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:32:29,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:29,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:29,170 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:29,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 01:32:29,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:32:29,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:32:29,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:32:29,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-11 01:32:29,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:32:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627519761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:32:29,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:32:29,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2024-10-11 01:32:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761441473] [2024-10-11 01:32:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:29,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:32:29,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:32:29,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:32:29,872 INFO L87 Difference]: Start difference. First operand 118 states and 156 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:29,953 INFO L93 Difference]: Finished difference Result 228 states and 304 transitions. [2024-10-11 01:32:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:32:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-10-11 01:32:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:29,954 INFO L225 Difference]: With dead ends: 228 [2024-10-11 01:32:29,955 INFO L226 Difference]: Without dead ends: 121 [2024-10-11 01:32:29,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:32:29,956 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:29,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 84 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-11 01:32:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-10-11 01:32:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3305084745762712) internal successors, (157), 118 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2024-10-11 01:32:29,966 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 113 [2024-10-11 01:32:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:29,966 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2024-10-11 01:32:29,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2024-10-11 01:32:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-11 01:32:29,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:29,968 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:29,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 01:32:30,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 01:32:30,169 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:30,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash -806561953, now seen corresponding path program 1 times [2024-10-11 01:32:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:30,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803374818] [2024-10-11 01:32:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-11 01:32:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:31,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803374818] [2024-10-11 01:32:31,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803374818] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188737428] [2024-10-11 01:32:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:31,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:31,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:31,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:31,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 01:32:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:31,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:32:31,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-10-11 01:32:32,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-10-11 01:32:32,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188737428] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:32,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:32:32,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-11 01:32:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505335660] [2024-10-11 01:32:32,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:32,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:32:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:32:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:32:32,075 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:32,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:32,162 INFO L93 Difference]: Finished difference Result 176 states and 233 transitions. [2024-10-11 01:32:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:32:32,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-10-11 01:32:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:32,163 INFO L225 Difference]: With dead ends: 176 [2024-10-11 01:32:32,163 INFO L226 Difference]: Without dead ends: 120 [2024-10-11 01:32:32,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:32:32,165 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:32,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-11 01:32:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-10-11 01:32:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 119 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2024-10-11 01:32:32,171 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 116 [2024-10-11 01:32:32,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:32,171 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2024-10-11 01:32:32,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2024-10-11 01:32:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-11 01:32:32,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:32,175 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:32,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 01:32:32,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 01:32:32,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:32,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1657320234, now seen corresponding path program 1 times [2024-10-11 01:32:32,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041638574] [2024-10-11 01:32:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-11 01:32:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041638574] [2024-10-11 01:32:33,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041638574] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884022464] [2024-10-11 01:32:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:33,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:33,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:33,492 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:33,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 01:32:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:34,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:32:34,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-10-11 01:32:34,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-10-11 01:32:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884022464] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:34,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:32:34,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-11 01:32:34,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508231095] [2024-10-11 01:32:34,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:34,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:32:34,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:34,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:32:34,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:32:34,308 INFO L87 Difference]: Start difference. First operand 120 states and 158 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) [2024-10-11 01:32:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:34,406 INFO L93 Difference]: Finished difference Result 178 states and 235 transitions. [2024-10-11 01:32:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:32:34,407 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 119 [2024-10-11 01:32:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:34,408 INFO L225 Difference]: With dead ends: 178 [2024-10-11 01:32:34,408 INFO L226 Difference]: Without dead ends: 121 [2024-10-11 01:32:34,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:32:34,411 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:34,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 87 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:34,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-11 01:32:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-10-11 01:32:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-10-11 01:32:34,421 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 119 [2024-10-11 01:32:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:34,422 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-10-11 01:32:34,422 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) [2024-10-11 01:32:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-10-11 01:32:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-11 01:32:34,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:34,423 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:34,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:34,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 01:32:34,628 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:34,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 313219713, now seen corresponding path program 1 times [2024-10-11 01:32:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:34,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56549741] [2024-10-11 01:32:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:34,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-11 01:32:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56549741] [2024-10-11 01:32:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56549741] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299408542] [2024-10-11 01:32:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:35,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:35,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:35,685 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:35,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 01:32:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:36,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 2227 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:32:36,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-11 01:32:36,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:32:36,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299408542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:32:36,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:32:36,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2024-10-11 01:32:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502204612] [2024-10-11 01:32:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:36,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:32:36,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:32:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:32:36,337 INFO L87 Difference]: Start difference. First operand 121 states and 159 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) [2024-10-11 01:32:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:36,429 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2024-10-11 01:32:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:32:36,429 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 120 [2024-10-11 01:32:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:36,430 INFO L225 Difference]: With dead ends: 232 [2024-10-11 01:32:36,430 INFO L226 Difference]: Without dead ends: 122 [2024-10-11 01:32:36,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:32:36,431 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:36,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-11 01:32:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-10-11 01:32:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.322314049586777) internal successors, (160), 121 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2024-10-11 01:32:36,457 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 120 [2024-10-11 01:32:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:36,458 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2024-10-11 01:32:36,458 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) [2024-10-11 01:32:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2024-10-11 01:32:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-11 01:32:36,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:36,459 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:36,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:36,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 01:32:36,661 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:36,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:36,661 INFO L85 PathProgramCache]: Analyzing trace with hash 675120251, now seen corresponding path program 1 times [2024-10-11 01:32:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448631839] [2024-10-11 01:32:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:36,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-11 01:32:37,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448631839] [2024-10-11 01:32:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448631839] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:37,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912172365] [2024-10-11 01:32:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:37,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:37,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:37,754 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:37,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 01:32:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:38,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:32:38,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-10-11 01:32:38,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-10-11 01:32:38,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912172365] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:38,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:32:38,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-11 01:32:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466579336] [2024-10-11 01:32:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:32:38,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:32:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:32:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:32:38,526 INFO L87 Difference]: Start difference. First operand 122 states and 160 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-10-11 01:32:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:38,612 INFO L93 Difference]: Finished difference Result 140 states and 183 transitions. [2024-10-11 01:32:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:32:38,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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 121 [2024-10-11 01:32:38,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:38,614 INFO L225 Difference]: With dead ends: 140 [2024-10-11 01:32:38,614 INFO L226 Difference]: Without dead ends: 123 [2024-10-11 01:32:38,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:32:38,615 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:38,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:32:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-11 01:32:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-10-11 01:32:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-10-11 01:32:38,620 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 121 [2024-10-11 01:32:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:38,621 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-10-11 01:32:38,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-10-11 01:32:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-10-11 01:32:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-11 01:32:38,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:38,622 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:38,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:38,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 01:32:38,823 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:38,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash 161031331, now seen corresponding path program 1 times [2024-10-11 01:32:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570683526] [2024-10-11 01:32:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:38,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-10-11 01:32:39,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570683526] [2024-10-11 01:32:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570683526] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447905897] [2024-10-11 01:32:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:39,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:39,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:39,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:39,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 01:32:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:40,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-11 01:32:40,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:32:40,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-10-11 01:32:41,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447905897] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:32:41,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:32:41,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2024-10-11 01:32:41,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808488241] [2024-10-11 01:32:41,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:32:41,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 01:32:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:41,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 01:32:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 01:32:41,145 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:43,765 INFO L93 Difference]: Finished difference Result 225 states and 308 transitions. [2024-10-11 01:32:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-11 01:32:43,766 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 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 122 [2024-10-11 01:32:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:43,767 INFO L225 Difference]: With dead ends: 225 [2024-10-11 01:32:43,767 INFO L226 Difference]: Without dead ends: 164 [2024-10-11 01:32:43,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 01:32:43,769 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 198 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:43,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1184 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 01:32:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-11 01:32:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2024-10-11 01:32:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 161 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 213 transitions. [2024-10-11 01:32:43,776 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 213 transitions. Word has length 122 [2024-10-11 01:32:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:43,776 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 213 transitions. [2024-10-11 01:32:43,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 213 transitions. [2024-10-11 01:32:43,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-11 01:32:43,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:43,778 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:43,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 01:32:43,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:43,979 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:43,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:43,979 INFO L85 PathProgramCache]: Analyzing trace with hash -718265104, now seen corresponding path program 2 times [2024-10-11 01:32:43,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:43,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887211820] [2024-10-11 01:32:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:32:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:32:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-10-11 01:32:45,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:32:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887211820] [2024-10-11 01:32:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887211820] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:32:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577008823] [2024-10-11 01:32:45,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:32:45,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:32:45,086 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:32:45,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 01:32:45,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:32:45,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:32:45,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-11 01:32:45,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:32:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-10-11 01:32:45,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:32:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-11 01:32:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577008823] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:32:46,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:32:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2024-10-11 01:32:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408785647] [2024-10-11 01:32:46,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:32:46,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-11 01:32:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:32:46,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-11 01:32:46,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 01:32:46,972 INFO L87 Difference]: Start difference. First operand 162 states and 213 transitions. Second operand has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:32:59,688 INFO L93 Difference]: Finished difference Result 310 states and 425 transitions. [2024-10-11 01:32:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 01:32:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 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 161 [2024-10-11 01:32:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:32:59,690 INFO L225 Difference]: With dead ends: 310 [2024-10-11 01:32:59,690 INFO L226 Difference]: Without dead ends: 213 [2024-10-11 01:32:59,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2024-10-11 01:32:59,694 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 294 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:32:59,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1891 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-11 01:32:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-11 01:32:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-10-11 01:32:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 212 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 281 transitions. [2024-10-11 01:32:59,707 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 281 transitions. Word has length 161 [2024-10-11 01:32:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:32:59,708 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 281 transitions. [2024-10-11 01:32:59,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:32:59,708 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 281 transitions. [2024-10-11 01:32:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-11 01:32:59,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:32:59,710 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:32:59,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 01:32:59,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:32:59,911 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:32:59,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:32:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash 208436291, now seen corresponding path program 3 times [2024-10-11 01:32:59,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:32:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21137574] [2024-10-11 01:32:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:32:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:33:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:33:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-11 01:33:01,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:33:01,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21137574] [2024-10-11 01:33:01,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21137574] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:33:01,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046125361] [2024-10-11 01:33:01,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:33:01,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:33:01,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:33:01,633 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:33:01,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 01:33:03,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:33:03,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:33:03,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 01:33:03,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:33:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2242 trivial. 0 not checked. [2024-10-11 01:33:03,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:33:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2242 trivial. 0 not checked. [2024-10-11 01:33:03,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046125361] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:33:03,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:33:03,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-10-11 01:33:03,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024122437] [2024-10-11 01:33:03,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:33:03,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 01:33:03,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:33:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 01:33:03,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-10-11 01:33:03,313 INFO L87 Difference]: Start difference. First operand 213 states and 281 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:33:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:33:04,097 INFO L93 Difference]: Finished difference Result 432 states and 575 transitions. [2024-10-11 01:33:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 01:33:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 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 212 [2024-10-11 01:33:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:33:04,098 INFO L225 Difference]: With dead ends: 432 [2024-10-11 01:33:04,098 INFO L226 Difference]: Without dead ends: 230 [2024-10-11 01:33:04,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 01:33:04,100 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 80 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 01:33:04,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 945 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 01:33:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-10-11 01:33:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2024-10-11 01:33:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3215859030837005) internal successors, (300), 227 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:33:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 300 transitions. [2024-10-11 01:33:04,113 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 300 transitions. Word has length 212 [2024-10-11 01:33:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:33:04,113 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 300 transitions. [2024-10-11 01:33:04,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:33:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 300 transitions. [2024-10-11 01:33:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-10-11 01:33:04,115 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:33:04,115 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 23, 23, 23, 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] [2024-10-11 01:33:04,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 01:33:04,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:33:04,316 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:33:04,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:33:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash 483531704, now seen corresponding path program 4 times [2024-10-11 01:33:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:33:04,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821382913] [2024-10-11 01:33:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:33:04,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:33:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:33:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2024-10-11 01:33:06,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:33:06,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821382913] [2024-10-11 01:33:06,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821382913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:33:06,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968846709] [2024-10-11 01:33:06,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:33:06,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:33:06,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:33:06,139 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:33:06,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 01:33:06,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:33:06,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:33:06,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-10-11 01:33:06,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:33:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 1 proven. 40 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-10-11 01:33:07,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:33:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 1 proven. 1551 refuted. 9 times theorem prover too weak. 792 trivial. 0 not checked. [2024-10-11 01:33:21,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968846709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:33:21,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:33:21,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8, 42] total 72 [2024-10-11 01:33:21,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482436735] [2024-10-11 01:33:21,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:33:21,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-10-11 01:33:21,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:33:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-10-11 01:33:21,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4908, Unknown=3, NotChecked=0, Total=5112 [2024-10-11 01:33:21,438 INFO L87 Difference]: Start difference. First operand 228 states and 300 transitions. Second operand has 72 states, 72 states have (on average 3.875) internal successors, (279), 72 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)