./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 17:16:02,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 17:16:02,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 17:16:02,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 17:16:02,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 17:16:02,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 17:16:02,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 17:16:02,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 17:16:02,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 17:16:02,882 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 17:16:02,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 17:16:02,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 17:16:02,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 17:16:02,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 17:16:02,885 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 17:16:02,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 17:16:02,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 17:16:02,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 17:16:02,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 17:16:02,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 17:16:02,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 17:16:02,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 17:16:02,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 17:16:02,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 17:16:02,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 17:16:02,888 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 17:16:02,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 17:16:02,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 17:16:02,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 17:16:02,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 17:16:02,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 17:16:02,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 17:16:02,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:16:02,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 17:16:02,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 17:16:02,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 17:16:02,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 17:16:02,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 17:16:02,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 17:16:02,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 17:16:02,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 17:16:02,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 17:16:02,892 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 [2024-11-19 17:16:03,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 17:16:03,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 17:16:03,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 17:16:03,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 17:16:03,136 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 17:16:03,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i [2024-11-19 17:16:04,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 17:16:04,645 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 17:16:04,645 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i [2024-11-19 17:16:04,660 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/857e08763/eadb6392e2e244da996f4be9cd1b0ef1/FLAG747b9b6a6 [2024-11-19 17:16:05,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/857e08763/eadb6392e2e244da996f4be9cd1b0ef1 [2024-11-19 17:16:05,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 17:16:05,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 17:16:05,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 17:16:05,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 17:16:05,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 17:16:05,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e117187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05, skipping insertion in model container [2024-11-19 17:16:05,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,064 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 17:16:05,306 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-11-19 17:16:05,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:16:05,376 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 17:16:05,448 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-11-19 17:16:05,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:16:05,463 INFO L204 MainTranslator]: Completed translation [2024-11-19 17:16:05,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05 WrapperNode [2024-11-19 17:16:05,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 17:16:05,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 17:16:05,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 17:16:05,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 17:16:05,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,535 INFO L138 Inliner]: procedures = 27, calls = 414, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 928 [2024-11-19 17:16:05,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 17:16:05,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 17:16:05,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 17:16:05,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 17:16:05,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,573 INFO L175 MemorySlicer]: Split 310 memory accesses to 14 slices as follows [10, 12, 10, 76, 48, 40, 3, 11, 15, 12, 37, 13, 10, 13]. 25 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [0, 10, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 1, 5]. The 117 writes are split as follows [5, 1, 5, 40, 10, 20, 2, 5, 5, 2, 15, 2, 3, 2]. [2024-11-19 17:16:05,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 17:16:05,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 17:16:05,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 17:16:05,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 17:16:05,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (1/1) ... [2024-11-19 17:16:05,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:16:05,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:05,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 17:16:05,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 17:16:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-19 17:16:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-19 17:16:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-19 17:16:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-19 17:16:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-19 17:16:05,680 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-19 17:16:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-19 17:16:05,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-19 17:16:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 17:16:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 17:16:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 17:16:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 17:16:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 17:16:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 17:16:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2024-11-19 17:16:05,682 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 17:16:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-19 17:16:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-19 17:16:05,683 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-19 17:16:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-19 17:16:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-19 17:16:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 17:16:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 17:16:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 17:16:05,966 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 17:16:05,970 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 17:16:06,598 INFO L? ?]: Removed 146 outVars from TransFormulas that were not future-live. [2024-11-19 17:16:06,599 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 17:16:06,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 17:16:06,613 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-19 17:16:06,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:06 BoogieIcfgContainer [2024-11-19 17:16:06,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 17:16:06,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 17:16:06,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 17:16:06,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 17:16:06,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:05" (1/3) ... [2024-11-19 17:16:06,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f50c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:06, skipping insertion in model container [2024-11-19 17:16:06,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05" (2/3) ... [2024-11-19 17:16:06,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f50c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:06, skipping insertion in model container [2024-11-19 17:16:06,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:06" (3/3) ... [2024-11-19 17:16:06,623 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2024-11-19 17:16:06,637 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 17:16:06,637 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 17:16:06,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 17:16:06,705 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;@63588beb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 17:16:06,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 17:16:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 154 states have internal predecessors, (232), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 17:16:06,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:06,722 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:06,723 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:06,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1488850041, now seen corresponding path program 1 times [2024-11-19 17:16:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:06,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371312793] [2024-11-19 17:16:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:07,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-19 17:16:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:07,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 17:16:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:07,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 17:16:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:07,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-19 17:16:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 17:16:07,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:07,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371312793] [2024-11-19 17:16:07,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371312793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:07,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:07,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 17:16:07,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102863440] [2024-11-19 17:16:07,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:07,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 17:16:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:07,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 17:16:07,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:16:07,281 INFO L87 Difference]: Start difference. First operand has 174 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 154 states have internal predecessors, (232), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:07,868 INFO L93 Difference]: Finished difference Result 348 states and 526 transitions. [2024-11-19 17:16:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 17:16:07,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2024-11-19 17:16:07,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:07,878 INFO L225 Difference]: With dead ends: 348 [2024-11-19 17:16:07,878 INFO L226 Difference]: Without dead ends: 167 [2024-11-19 17:16:07,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 17:16:07,883 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 66 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:07,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 657 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:16:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-19 17:16:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2024-11-19 17:16:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 142 states have (on average 1.2887323943661972) internal successors, (183), 144 states have internal predecessors, (183), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2024-11-19 17:16:07,957 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 48 [2024-11-19 17:16:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:07,957 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2024-11-19 17:16:07,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2024-11-19 17:16:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 17:16:07,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:07,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:07,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 17:16:07,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:07,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1059278353, now seen corresponding path program 1 times [2024-11-19 17:16:07,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:07,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370733198] [2024-11-19 17:16:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:07,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 17:16:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 17:16:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 17:16:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 17:16:08,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370733198] [2024-11-19 17:16:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370733198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193813883] [2024-11-19 17:16:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:08,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:08,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:08,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:08,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 17:16:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:16:08,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 17:16:08,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:08,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193813883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:08,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:08,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-19 17:16:08,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569685199] [2024-11-19 17:16:08,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:08,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:08,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:08,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:08,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:08,445 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:08,461 INFO L93 Difference]: Finished difference Result 322 states and 417 transitions. [2024-11-19 17:16:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-19 17:16:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:08,463 INFO L225 Difference]: With dead ends: 322 [2024-11-19 17:16:08,463 INFO L226 Difference]: Without dead ends: 166 [2024-11-19 17:16:08,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:08,465 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 1 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:08,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 413 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-19 17:16:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2024-11-19 17:16:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 143 states have (on average 1.2867132867132867) internal successors, (184), 145 states have internal predecessors, (184), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 212 transitions. [2024-11-19 17:16:08,478 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 212 transitions. Word has length 51 [2024-11-19 17:16:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:08,478 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 212 transitions. [2024-11-19 17:16:08,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 212 transitions. [2024-11-19 17:16:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 17:16:08,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:08,483 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:08,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 17:16:08,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:08,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:08,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:08,689 INFO L85 PathProgramCache]: Analyzing trace with hash -384397005, now seen corresponding path program 1 times [2024-11-19 17:16:08,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661665355] [2024-11-19 17:16:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:08,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 17:16:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:16:08,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661665355] [2024-11-19 17:16:08,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661665355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243835925] [2024-11-19 17:16:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:08,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:08,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:08,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:08,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 17:16:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:09,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:16:09,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:16:09,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:09,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243835925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:09,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:09,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:09,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412879887] [2024-11-19 17:16:09,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:09,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:09,142 INFO L87 Difference]: Start difference. First operand 165 states and 212 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:09,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:09,176 INFO L93 Difference]: Finished difference Result 311 states and 401 transitions. [2024-11-19 17:16:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:09,178 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-19 17:16:09,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:09,180 INFO L225 Difference]: With dead ends: 311 [2024-11-19 17:16:09,180 INFO L226 Difference]: Without dead ends: 172 [2024-11-19 17:16:09,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:09,181 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 6 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:09,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 406 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-19 17:16:09,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2024-11-19 17:16:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.2847222222222223) internal successors, (185), 146 states have internal predecessors, (185), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2024-11-19 17:16:09,200 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 55 [2024-11-19 17:16:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:09,201 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2024-11-19 17:16:09,201 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2024-11-19 17:16:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 17:16:09,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:09,204 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:09,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 17:16:09,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 17:16:09,406 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:09,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:09,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1023059147, now seen corresponding path program 1 times [2024-11-19 17:16:09,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:09,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243044600] [2024-11-19 17:16:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:09,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:09,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:09,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:09,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:09,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 17:16:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 17:16:09,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:09,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243044600] [2024-11-19 17:16:09,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243044600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:09,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380152114] [2024-11-19 17:16:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:09,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:09,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:09,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:09,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 17:16:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:09,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:16:09,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 17:16:09,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:09,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380152114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:09,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:09,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873503506] [2024-11-19 17:16:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:09,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:09,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:09,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:09,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:09,786 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:09,843 INFO L93 Difference]: Finished difference Result 300 states and 388 transitions. [2024-11-19 17:16:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:09,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2024-11-19 17:16:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:09,847 INFO L225 Difference]: With dead ends: 300 [2024-11-19 17:16:09,847 INFO L226 Difference]: Without dead ends: 173 [2024-11-19 17:16:09,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:09,849 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 6 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:09,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-19 17:16:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-19 17:16:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 145 states have (on average 1.282758620689655) internal successors, (186), 147 states have internal predecessors, (186), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2024-11-19 17:16:09,856 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 58 [2024-11-19 17:16:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:09,856 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2024-11-19 17:16:09,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2024-11-19 17:16:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-19 17:16:09,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:09,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:09,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 17:16:10,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:10,058 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:10,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:10,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1869838307, now seen corresponding path program 1 times [2024-11-19 17:16:10,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:10,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596992929] [2024-11-19 17:16:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:10,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 17:16:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 17:16:10,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:10,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596992929] [2024-11-19 17:16:10,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596992929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:10,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607786037] [2024-11-19 17:16:10,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:10,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:10,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:10,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:10,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 17:16:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:16:10,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-19 17:16:10,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:10,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607786037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:10,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787544705] [2024-11-19 17:16:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:10,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:10,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:10,385 INFO L87 Difference]: Start difference. First operand 167 states and 214 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:10,438 INFO L93 Difference]: Finished difference Result 203 states and 269 transitions. [2024-11-19 17:16:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:10,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-19 17:16:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:10,440 INFO L225 Difference]: With dead ends: 203 [2024-11-19 17:16:10,440 INFO L226 Difference]: Without dead ends: 197 [2024-11-19 17:16:10,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:10,441 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 47 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:10,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 371 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:10,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-19 17:16:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2024-11-19 17:16:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 146 states have (on average 1.2808219178082192) internal successors, (187), 148 states have internal predecessors, (187), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 215 transitions. [2024-11-19 17:16:10,451 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 215 transitions. Word has length 61 [2024-11-19 17:16:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:10,451 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 215 transitions. [2024-11-19 17:16:10,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 215 transitions. [2024-11-19 17:16:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 17:16:10,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:10,452 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:10,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 17:16:10,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:10,653 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:10,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash -43287961, now seen corresponding path program 1 times [2024-11-19 17:16:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:10,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423213173] [2024-11-19 17:16:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:10,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 17:16:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 17:16:10,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:10,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423213173] [2024-11-19 17:16:10,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423213173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:10,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124788245] [2024-11-19 17:16:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:10,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:10,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:10,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:10,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 17:16:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:11,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:16:11,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-19 17:16:11,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124788245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:11,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:11,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666098784] [2024-11-19 17:16:11,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:11,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:11,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:11,074 INFO L87 Difference]: Start difference. First operand 168 states and 215 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:11,085 INFO L93 Difference]: Finished difference Result 205 states and 272 transitions. [2024-11-19 17:16:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2024-11-19 17:16:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:11,086 INFO L225 Difference]: With dead ends: 205 [2024-11-19 17:16:11,086 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 17:16:11,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:11,087 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:11,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 413 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:11,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 17:16:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-19 17:16:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 147 states have (on average 1.2789115646258504) internal successors, (188), 149 states have internal predecessors, (188), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2024-11-19 17:16:11,093 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 71 [2024-11-19 17:16:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:11,093 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2024-11-19 17:16:11,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2024-11-19 17:16:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 17:16:11,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:11,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:11,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 17:16:11,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:11,299 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:11,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash -723346331, now seen corresponding path program 1 times [2024-11-19 17:16:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337512487] [2024-11-19 17:16:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:11,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:11,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:11,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:11,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 17:16:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 17:16:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:11,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337512487] [2024-11-19 17:16:11,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337512487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:11,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755975053] [2024-11-19 17:16:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:11,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:11,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:11,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:11,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 17:16:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:11,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 17:16:11,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 17:16:11,744 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755975053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:11,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:11,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661655342] [2024-11-19 17:16:11,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:11,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:11,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:11,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:11,745 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:11,756 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-11-19 17:16:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2024-11-19 17:16:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:11,757 INFO L225 Difference]: With dead ends: 206 [2024-11-19 17:16:11,757 INFO L226 Difference]: Without dead ends: 200 [2024-11-19 17:16:11,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:11,758 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 37 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:11,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 414 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-19 17:16:11,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2024-11-19 17:16:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 177 states have (on average 1.3333333333333333) internal successors, (236), 179 states have internal predecessors, (236), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2024-11-19 17:16:11,766 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 71 [2024-11-19 17:16:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:11,766 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2024-11-19 17:16:11,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2024-11-19 17:16:11,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 17:16:11,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:11,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:11,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 17:16:11,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:11,972 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:11,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -602784093, now seen corresponding path program 1 times [2024-11-19 17:16:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459871298] [2024-11-19 17:16:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:11,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 17:16:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 17:16:12,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459871298] [2024-11-19 17:16:12,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459871298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:12,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125834227] [2024-11-19 17:16:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:12,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:12,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:12,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:12,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 17:16:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 17:16:12,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 17:16:12,357 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125834227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:12,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:12,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590763638] [2024-11-19 17:16:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:12,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:12,359 INFO L87 Difference]: Start difference. First operand 199 states and 264 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:12,368 INFO L93 Difference]: Finished difference Result 267 states and 369 transitions. [2024-11-19 17:16:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 85 [2024-11-19 17:16:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:12,369 INFO L225 Difference]: With dead ends: 267 [2024-11-19 17:16:12,369 INFO L226 Difference]: Without dead ends: 261 [2024-11-19 17:16:12,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:12,370 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 23 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:12,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 414 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-19 17:16:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-19 17:16:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 239 states have (on average 1.397489539748954) internal successors, (334), 241 states have internal predecessors, (334), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 362 transitions. [2024-11-19 17:16:12,376 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 362 transitions. Word has length 85 [2024-11-19 17:16:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:12,377 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 362 transitions. [2024-11-19 17:16:12,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 362 transitions. [2024-11-19 17:16:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-19 17:16:12,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:12,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:12,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 17:16:12,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:12,579 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:12,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:12,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2050220215, now seen corresponding path program 1 times [2024-11-19 17:16:12,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964425611] [2024-11-19 17:16:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:12,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 17:16:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-19 17:16:12,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:12,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964425611] [2024-11-19 17:16:12,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964425611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:12,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101159509] [2024-11-19 17:16:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:12,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:12,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:12,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:12,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 17:16:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:12,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 17:16:12,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 17:16:13,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101159509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:13,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983388724] [2024-11-19 17:16:13,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:13,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:13,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:13,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:13,021 INFO L87 Difference]: Start difference. First operand 261 states and 362 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:13,031 INFO L93 Difference]: Finished difference Result 391 states and 565 transitions. [2024-11-19 17:16:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 101 [2024-11-19 17:16:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:13,033 INFO L225 Difference]: With dead ends: 391 [2024-11-19 17:16:13,033 INFO L226 Difference]: Without dead ends: 385 [2024-11-19 17:16:13,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:13,034 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 22 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:13,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 415 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:13,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-19 17:16:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-11-19 17:16:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 363 states have (on average 1.4600550964187329) internal successors, (530), 365 states have internal predecessors, (530), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 558 transitions. [2024-11-19 17:16:13,042 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 558 transitions. Word has length 101 [2024-11-19 17:16:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:13,043 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 558 transitions. [2024-11-19 17:16:13,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 558 transitions. [2024-11-19 17:16:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 17:16:13,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:13,044 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:13,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 17:16:13,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-19 17:16:13,245 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:13,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1515910087, now seen corresponding path program 1 times [2024-11-19 17:16:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:13,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316425788] [2024-11-19 17:16:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:13,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:13,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:13,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:13,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 17:16:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-19 17:16:13,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316425788] [2024-11-19 17:16:13,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316425788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179746718] [2024-11-19 17:16:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:13,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:13,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:13,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:13,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 17:16:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:13,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 17:16:13,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-19 17:16:13,750 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:13,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179746718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:13,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:13,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-19 17:16:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715470055] [2024-11-19 17:16:13,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:13,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:16:13,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:13,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:16:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:13,751 INFO L87 Difference]: Start difference. First operand 385 states and 558 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:13,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:13,763 INFO L93 Difference]: Finished difference Result 639 states and 957 transitions. [2024-11-19 17:16:13,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:16:13,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 111 [2024-11-19 17:16:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:13,766 INFO L225 Difference]: With dead ends: 639 [2024-11-19 17:16:13,766 INFO L226 Difference]: Without dead ends: 633 [2024-11-19 17:16:13,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:13,766 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:13,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 413 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:16:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-19 17:16:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2024-11-19 17:16:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 611 states have (on average 1.5090016366612111) internal successors, (922), 613 states have internal predecessors, (922), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:13,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 950 transitions. [2024-11-19 17:16:13,777 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 950 transitions. Word has length 111 [2024-11-19 17:16:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:13,777 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 950 transitions. [2024-11-19 17:16:13,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 17:16:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 950 transitions. [2024-11-19 17:16:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 17:16:13,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:13,779 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:13,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 17:16:13,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 17:16:13,980 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:13,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1155272663, now seen corresponding path program 1 times [2024-11-19 17:16:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:13,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277080199] [2024-11-19 17:16:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:13,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:14,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 17:16:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:14,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 17:16:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:14,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 17:16:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:14,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 17:16:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-19 17:16:14,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:14,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277080199] [2024-11-19 17:16:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277080199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017813097] [2024-11-19 17:16:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:14,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:14,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:14,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:14,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 17:16:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:14,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 17:16:14,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 17:16:14,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:16:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 17:16:14,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017813097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:16:14,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:16:14,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2024-11-19 17:16:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440939060] [2024-11-19 17:16:14,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:16:14,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 17:16:14,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 17:16:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:16:14,510 INFO L87 Difference]: Start difference. First operand 633 states and 950 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 9 states have internal predecessors, (100), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-19 17:16:15,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:15,085 INFO L93 Difference]: Finished difference Result 1269 states and 1908 transitions. [2024-11-19 17:16:15,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 17:16:15,086 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 9 states have internal predecessors, (100), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 141 [2024-11-19 17:16:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:15,088 INFO L225 Difference]: With dead ends: 1269 [2024-11-19 17:16:15,088 INFO L226 Difference]: Without dead ends: 641 [2024-11-19 17:16:15,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-19 17:16:15,089 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 67 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:15,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 743 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:16:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-11-19 17:16:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2024-11-19 17:16:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 619 states have (on average 1.5024232633279484) internal successors, (930), 621 states have internal predecessors, (930), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 17:16:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 958 transitions. [2024-11-19 17:16:15,099 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 958 transitions. Word has length 141 [2024-11-19 17:16:15,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:15,099 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 958 transitions. [2024-11-19 17:16:15,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 9 states have internal predecessors, (100), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-19 17:16:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 958 transitions. [2024-11-19 17:16:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 17:16:15,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:15,101 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:15,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 17:16:15,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 17:16:15,302 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:15,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash 331110791, now seen corresponding path program 2 times [2024-11-19 17:16:15,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:15,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328081363] [2024-11-19 17:16:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:15,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 17:16:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:15,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:15,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 17:16:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:15,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-19 17:16:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-19 17:16:15,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328081363] [2024-11-19 17:16:15,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328081363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813054550] [2024-11-19 17:16:15,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:16:15,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:15,449 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:15,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 17:16:15,996 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:16:15,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:16:15,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 17:16:16,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-19 17:16:16,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:16:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-19 17:16:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813054550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:16:16,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:16:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-19 17:16:16,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20197883] [2024-11-19 17:16:16,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:16:16,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 17:16:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 17:16:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-19 17:16:16,105 INFO L87 Difference]: Start difference. First operand 641 states and 958 transitions. Second operand has 15 states, 15 states have (on average 7.8) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-19 17:16:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:16,953 INFO L93 Difference]: Finished difference Result 1294 states and 1937 transitions. [2024-11-19 17:16:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 17:16:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.8) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 151 [2024-11-19 17:16:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:16,956 INFO L225 Difference]: With dead ends: 1294 [2024-11-19 17:16:16,956 INFO L226 Difference]: Without dead ends: 664 [2024-11-19 17:16:16,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-19 17:16:16,958 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 73 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:16,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1013 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 17:16:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-19 17:16:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 658. [2024-11-19 17:16:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 635 states have (on average 1.4913385826771655) internal successors, (947), 637 states have internal predecessors, (947), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-19 17:16:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 977 transitions. [2024-11-19 17:16:16,969 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 977 transitions. Word has length 151 [2024-11-19 17:16:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:16,969 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 977 transitions. [2024-11-19 17:16:16,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.8) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-19 17:16:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 977 transitions. [2024-11-19 17:16:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 17:16:16,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:16,971 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:16,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 17:16:17,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 17:16:17,172 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:17,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1264888307, now seen corresponding path program 3 times [2024-11-19 17:16:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975320170] [2024-11-19 17:16:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:17,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:17,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:17,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:17,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 17:16:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-19 17:16:17,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:17,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975320170] [2024-11-19 17:16:17,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975320170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:17,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102039925] [2024-11-19 17:16:17,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:16:17,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:17,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:17,365 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:17,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 17:16:17,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 17:16:17,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:16:17,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 17:16:17,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:18,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 152 [2024-11-19 17:16:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-19 17:16:18,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102039925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-19 17:16:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154109796] [2024-11-19 17:16:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:18,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:16:18,744 INFO L87 Difference]: Start difference. First operand 658 states and 977 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:20,032 INFO L93 Difference]: Finished difference Result 1299 states and 1948 transitions. [2024-11-19 17:16:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2024-11-19 17:16:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:20,039 INFO L225 Difference]: With dead ends: 1299 [2024-11-19 17:16:20,039 INFO L226 Difference]: Without dead ends: 790 [2024-11-19 17:16:20,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-19 17:16:20,040 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 133 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:20,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1051 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 17:16:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2024-11-19 17:16:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 679. [2024-11-19 17:16:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 653 states have (on average 1.4869831546707504) internal successors, (971), 657 states have internal predecessors, (971), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 17:16:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1007 transitions. [2024-11-19 17:16:20,071 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1007 transitions. Word has length 164 [2024-11-19 17:16:20,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:20,072 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1007 transitions. [2024-11-19 17:16:20,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 17:16:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1007 transitions. [2024-11-19 17:16:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-19 17:16:20,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:20,073 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:20,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 17:16:20,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 17:16:20,278 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:20,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:20,278 INFO L85 PathProgramCache]: Analyzing trace with hash -55188266, now seen corresponding path program 1 times [2024-11-19 17:16:20,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:20,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213587783] [2024-11-19 17:16:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:20,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:20,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:20,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:20,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 17:16:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:20,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-19 17:16:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-19 17:16:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213587783] [2024-11-19 17:16:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213587783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108561441] [2024-11-19 17:16:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:20,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:20,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:20,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:20,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 17:16:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:20,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 17:16:20,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-19 17:16:20,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:16:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-19 17:16:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108561441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:16:21,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:16:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2024-11-19 17:16:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517263967] [2024-11-19 17:16:21,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:16:21,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 17:16:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 17:16:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 17:16:21,007 INFO L87 Difference]: Start difference. First operand 679 states and 1007 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 10 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:21,819 INFO L93 Difference]: Finished difference Result 1347 states and 2011 transitions. [2024-11-19 17:16:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 17:16:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 10 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 180 [2024-11-19 17:16:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:21,822 INFO L225 Difference]: With dead ends: 1347 [2024-11-19 17:16:21,822 INFO L226 Difference]: Without dead ends: 720 [2024-11-19 17:16:21,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-19 17:16:21,828 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 125 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:21,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 829 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 17:16:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-19 17:16:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 714. [2024-11-19 17:16:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 683 states have (on average 1.472913616398243) internal successors, (1006), 687 states have internal predecessors, (1006), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1052 transitions. [2024-11-19 17:16:21,850 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1052 transitions. Word has length 180 [2024-11-19 17:16:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:21,850 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1052 transitions. [2024-11-19 17:16:21,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 10 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1052 transitions. [2024-11-19 17:16:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:21,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:21,852 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:21,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 17:16:22,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 17:16:22,054 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:22,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 303728758, now seen corresponding path program 2 times [2024-11-19 17:16:22,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:22,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159854817] [2024-11-19 17:16:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:22,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:22,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:22,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:22,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:22,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-11-19 17:16:22,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:22,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159854817] [2024-11-19 17:16:22,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159854817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:22,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:22,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 17:16:22,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570908511] [2024-11-19 17:16:22,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:22,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 17:16:22,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:22,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 17:16:22,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 17:16:22,536 INFO L87 Difference]: Start difference. First operand 714 states and 1052 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:23,306 INFO L93 Difference]: Finished difference Result 1696 states and 2595 transitions. [2024-11-19 17:16:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 17:16:23,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:23,310 INFO L225 Difference]: With dead ends: 1696 [2024-11-19 17:16:23,310 INFO L226 Difference]: Without dead ends: 1194 [2024-11-19 17:16:23,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:16:23,312 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 141 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:23,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 628 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 17:16:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2024-11-19 17:16:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 858. [2024-11-19 17:16:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 827 states have (on average 1.467956469165659) internal successors, (1214), 831 states have internal predecessors, (1214), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1260 transitions. [2024-11-19 17:16:23,340 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1260 transitions. Word has length 195 [2024-11-19 17:16:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:23,340 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1260 transitions. [2024-11-19 17:16:23,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1260 transitions. [2024-11-19 17:16:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:23,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:23,343 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:23,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 17:16:23,343 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:23,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:23,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1827732356, now seen corresponding path program 1 times [2024-11-19 17:16:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023427260] [2024-11-19 17:16:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:23,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:23,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:23,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:23,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:23,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-19 17:16:23,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:23,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023427260] [2024-11-19 17:16:23,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023427260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:23,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:23,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:23,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692983539] [2024-11-19 17:16:23,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:23,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:23,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:23,598 INFO L87 Difference]: Start difference. First operand 858 states and 1260 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:24,263 INFO L93 Difference]: Finished difference Result 1552 states and 2323 transitions. [2024-11-19 17:16:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:24,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:24,267 INFO L225 Difference]: With dead ends: 1552 [2024-11-19 17:16:24,267 INFO L226 Difference]: Without dead ends: 906 [2024-11-19 17:16:24,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:24,268 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 63 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:24,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 838 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:16:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-11-19 17:16:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 890. [2024-11-19 17:16:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 859 states have (on average 1.450523864959255) internal successors, (1246), 863 states have internal predecessors, (1246), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1292 transitions. [2024-11-19 17:16:24,285 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1292 transitions. Word has length 195 [2024-11-19 17:16:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:24,285 INFO L471 AbstractCegarLoop]: Abstraction has 890 states and 1292 transitions. [2024-11-19 17:16:24,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1292 transitions. [2024-11-19 17:16:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:24,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:24,287 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:24,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 17:16:24,288 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:24,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1222560258, now seen corresponding path program 1 times [2024-11-19 17:16:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640108853] [2024-11-19 17:16:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:24,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:24,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:24,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:24,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:24,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-19 17:16:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640108853] [2024-11-19 17:16:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640108853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:24,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:24,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:24,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675080207] [2024-11-19 17:16:24,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:24,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:24,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:24,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:24,558 INFO L87 Difference]: Start difference. First operand 890 states and 1292 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:25,493 INFO L93 Difference]: Finished difference Result 1616 states and 2403 transitions. [2024-11-19 17:16:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:25,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:25,496 INFO L225 Difference]: With dead ends: 1616 [2024-11-19 17:16:25,496 INFO L226 Difference]: Without dead ends: 938 [2024-11-19 17:16:25,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:25,498 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 63 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:25,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 841 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 17:16:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2024-11-19 17:16:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2024-11-19 17:16:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 907 states have (on average 1.4266813671444323) internal successors, (1294), 911 states have internal predecessors, (1294), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1340 transitions. [2024-11-19 17:16:25,516 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1340 transitions. Word has length 195 [2024-11-19 17:16:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:25,516 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1340 transitions. [2024-11-19 17:16:25,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1340 transitions. [2024-11-19 17:16:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:25,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:25,519 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:25,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 17:16:25,519 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:25,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2085255164, now seen corresponding path program 1 times [2024-11-19 17:16:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:25,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348299484] [2024-11-19 17:16:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:25,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:25,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:25,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:25,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:25,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-19 17:16:25,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348299484] [2024-11-19 17:16:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348299484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:25,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520546656] [2024-11-19 17:16:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:25,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:25,779 INFO L87 Difference]: Start difference. First operand 938 states and 1340 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:26,334 INFO L93 Difference]: Finished difference Result 1680 states and 2435 transitions. [2024-11-19 17:16:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:26,340 INFO L225 Difference]: With dead ends: 1680 [2024-11-19 17:16:26,340 INFO L226 Difference]: Without dead ends: 954 [2024-11-19 17:16:26,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:26,342 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 65 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:26,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 743 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:16:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-19 17:16:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 938. [2024-11-19 17:16:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 907 states have (on average 1.4090407938257994) internal successors, (1278), 911 states have internal predecessors, (1278), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1324 transitions. [2024-11-19 17:16:26,363 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1324 transitions. Word has length 195 [2024-11-19 17:16:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:26,364 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1324 transitions. [2024-11-19 17:16:26,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1324 transitions. [2024-11-19 17:16:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:26,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:26,367 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:26,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 17:16:26,367 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:26,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash 520768390, now seen corresponding path program 1 times [2024-11-19 17:16:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832907468] [2024-11-19 17:16:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:26,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:26,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:26,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:26,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:26,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:26,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-19 17:16:26,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:26,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832907468] [2024-11-19 17:16:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832907468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:26,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:26,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:26,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75011178] [2024-11-19 17:16:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:26,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:26,592 INFO L87 Difference]: Start difference. First operand 938 states and 1324 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:27,242 INFO L93 Difference]: Finished difference Result 1712 states and 2451 transitions. [2024-11-19 17:16:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:27,246 INFO L225 Difference]: With dead ends: 1712 [2024-11-19 17:16:27,246 INFO L226 Difference]: Without dead ends: 986 [2024-11-19 17:16:27,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:27,248 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 62 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:27,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 852 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:16:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-19 17:16:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 970. [2024-11-19 17:16:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 939 states have (on average 1.3780617678381257) internal successors, (1294), 943 states have internal predecessors, (1294), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1340 transitions. [2024-11-19 17:16:27,268 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1340 transitions. Word has length 195 [2024-11-19 17:16:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:27,268 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1340 transitions. [2024-11-19 17:16:27,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1340 transitions. [2024-11-19 17:16:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:27,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:27,271 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:27,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 17:16:27,271 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:27,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1067579512, now seen corresponding path program 1 times [2024-11-19 17:16:27,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:27,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028779277] [2024-11-19 17:16:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:27,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:27,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:27,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:27,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:27,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-19 17:16:27,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:27,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028779277] [2024-11-19 17:16:27,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028779277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:27,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:27,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 17:16:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443498031] [2024-11-19 17:16:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:27,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 17:16:27,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 17:16:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 17:16:27,570 INFO L87 Difference]: Start difference. First operand 970 states and 1340 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:28,591 INFO L93 Difference]: Finished difference Result 2032 states and 2867 transitions. [2024-11-19 17:16:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 17:16:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:28,595 INFO L225 Difference]: With dead ends: 2032 [2024-11-19 17:16:28,595 INFO L226 Difference]: Without dead ends: 1274 [2024-11-19 17:16:28,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:16:28,596 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 78 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:28,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 901 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 17:16:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-11-19 17:16:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1162. [2024-11-19 17:16:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1131 states have (on average 1.3846153846153846) internal successors, (1566), 1135 states have internal predecessors, (1566), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1612 transitions. [2024-11-19 17:16:28,630 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1612 transitions. Word has length 195 [2024-11-19 17:16:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:28,630 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1612 transitions. [2024-11-19 17:16:28,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1612 transitions. [2024-11-19 17:16:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:28,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:28,634 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:28,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 17:16:28,634 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:28,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1484976118, now seen corresponding path program 1 times [2024-11-19 17:16:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:28,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405989875] [2024-11-19 17:16:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:28,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:28,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:28,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:28,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:28,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:28,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-19 17:16:28,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:28,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405989875] [2024-11-19 17:16:28,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405989875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:28,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:28,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:28,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637144987] [2024-11-19 17:16:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:28,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:28,903 INFO L87 Difference]: Start difference. First operand 1162 states and 1612 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:29,654 INFO L93 Difference]: Finished difference Result 2160 states and 3027 transitions. [2024-11-19 17:16:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:29,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:29,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:29,658 INFO L225 Difference]: With dead ends: 2160 [2024-11-19 17:16:29,659 INFO L226 Difference]: Without dead ends: 1210 [2024-11-19 17:16:29,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:29,661 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 63 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:29,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 838 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 17:16:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-19 17:16:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1194. [2024-11-19 17:16:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1163 states have (on average 1.3740326741186586) internal successors, (1598), 1167 states have internal predecessors, (1598), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1644 transitions. [2024-11-19 17:16:29,686 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1644 transitions. Word has length 195 [2024-11-19 17:16:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:29,686 INFO L471 AbstractCegarLoop]: Abstraction has 1194 states and 1644 transitions. [2024-11-19 17:16:29,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1644 transitions. [2024-11-19 17:16:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:29,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:29,688 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:29,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 17:16:29,689 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:29,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 476598540, now seen corresponding path program 1 times [2024-11-19 17:16:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:29,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881755045] [2024-11-19 17:16:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:29,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:29,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:29,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:29,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:29,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:29,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-19 17:16:29,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:29,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881755045] [2024-11-19 17:16:29,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881755045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:29,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:29,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:29,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833361145] [2024-11-19 17:16:29,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:29,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:29,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:29,890 INFO L87 Difference]: Start difference. First operand 1194 states and 1644 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:30,563 INFO L93 Difference]: Finished difference Result 2224 states and 3107 transitions. [2024-11-19 17:16:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:30,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:30,567 INFO L225 Difference]: With dead ends: 2224 [2024-11-19 17:16:30,567 INFO L226 Difference]: Without dead ends: 1242 [2024-11-19 17:16:30,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:30,569 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 63 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:30,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 840 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:16:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2024-11-19 17:16:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1242. [2024-11-19 17:16:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1211 states have (on average 1.3592072667217177) internal successors, (1646), 1215 states have internal predecessors, (1646), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1692 transitions. [2024-11-19 17:16:30,591 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1692 transitions. Word has length 195 [2024-11-19 17:16:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:30,591 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1692 transitions. [2024-11-19 17:16:30,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1692 transitions. [2024-11-19 17:16:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:30,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:30,594 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:30,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 17:16:30,594 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:30,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:30,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1114665224, now seen corresponding path program 2 times [2024-11-19 17:16:30,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:30,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661262903] [2024-11-19 17:16:30,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:30,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:30,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:30,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:30,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:30,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-19 17:16:30,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:30,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661262903] [2024-11-19 17:16:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661262903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 17:16:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57054863] [2024-11-19 17:16:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:30,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 17:16:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 17:16:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 17:16:30,976 INFO L87 Difference]: Start difference. First operand 1242 states and 1692 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:31,737 INFO L93 Difference]: Finished difference Result 2608 states and 3539 transitions. [2024-11-19 17:16:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 17:16:31,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:31,742 INFO L225 Difference]: With dead ends: 2608 [2024-11-19 17:16:31,742 INFO L226 Difference]: Without dead ends: 1578 [2024-11-19 17:16:31,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:16:31,743 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 120 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:31,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 895 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 17:16:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2024-11-19 17:16:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1338. [2024-11-19 17:16:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1307 states have (on average 1.3205814843152257) internal successors, (1726), 1311 states have internal predecessors, (1726), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1772 transitions. [2024-11-19 17:16:31,766 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1772 transitions. Word has length 195 [2024-11-19 17:16:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:31,767 INFO L471 AbstractCegarLoop]: Abstraction has 1338 states and 1772 transitions. [2024-11-19 17:16:31,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1772 transitions. [2024-11-19 17:16:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:31,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:31,769 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:31,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 17:16:31,769 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:31,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1774196746, now seen corresponding path program 1 times [2024-11-19 17:16:31,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:31,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119912635] [2024-11-19 17:16:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:31,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:31,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:31,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:31,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:31,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:31,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-19 17:16:32,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:32,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119912635] [2024-11-19 17:16:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119912635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:32,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210729479] [2024-11-19 17:16:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:32,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:32,004 INFO L87 Difference]: Start difference. First operand 1338 states and 1772 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:32,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:32,678 INFO L93 Difference]: Finished difference Result 2512 states and 3347 transitions. [2024-11-19 17:16:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:32,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:32,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:32,683 INFO L225 Difference]: With dead ends: 2512 [2024-11-19 17:16:32,683 INFO L226 Difference]: Without dead ends: 1386 [2024-11-19 17:16:32,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:32,685 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 62 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:32,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 852 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:16:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2024-11-19 17:16:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1370. [2024-11-19 17:16:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1339 states have (on average 1.3009708737864079) internal successors, (1742), 1343 states have internal predecessors, (1742), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1788 transitions. [2024-11-19 17:16:32,712 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1788 transitions. Word has length 195 [2024-11-19 17:16:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:32,713 INFO L471 AbstractCegarLoop]: Abstraction has 1370 states and 1788 transitions. [2024-11-19 17:16:32,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1788 transitions. [2024-11-19 17:16:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:32,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:32,715 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:32,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 17:16:32,715 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:32,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash 930191244, now seen corresponding path program 1 times [2024-11-19 17:16:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:32,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090954484] [2024-11-19 17:16:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:32,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:32,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:32,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:32,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:32,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:32,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-19 17:16:32,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:32,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090954484] [2024-11-19 17:16:32,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090954484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:32,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:32,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210503166] [2024-11-19 17:16:32,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:32,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:32,950 INFO L87 Difference]: Start difference. First operand 1370 states and 1788 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 4 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:33,539 INFO L93 Difference]: Finished difference Result 2576 states and 3379 transitions. [2024-11-19 17:16:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 4 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:33,543 INFO L225 Difference]: With dead ends: 2576 [2024-11-19 17:16:33,543 INFO L226 Difference]: Without dead ends: 1418 [2024-11-19 17:16:33,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:33,545 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 65 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:33,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 743 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:16:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2024-11-19 17:16:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1402. [2024-11-19 17:16:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1371 states have (on average 1.2822757111597374) internal successors, (1758), 1375 states have internal predecessors, (1758), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1804 transitions. [2024-11-19 17:16:33,566 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1804 transitions. Word has length 195 [2024-11-19 17:16:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:33,567 INFO L471 AbstractCegarLoop]: Abstraction has 1402 states and 1804 transitions. [2024-11-19 17:16:33,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 4 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1804 transitions. [2024-11-19 17:16:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:33,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:33,569 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:33,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 17:16:33,569 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:33,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 857804686, now seen corresponding path program 1 times [2024-11-19 17:16:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092847703] [2024-11-19 17:16:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:33,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:33,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:33,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:33,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:33,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-19 17:16:33,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092847703] [2024-11-19 17:16:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092847703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:33,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:16:33,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 17:16:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862014771] [2024-11-19 17:16:33,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:33,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 17:16:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 17:16:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 17:16:33,800 INFO L87 Difference]: Start difference. First operand 1402 states and 1804 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:34,346 INFO L93 Difference]: Finished difference Result 2640 states and 3427 transitions. [2024-11-19 17:16:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:16:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 195 [2024-11-19 17:16:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:34,350 INFO L225 Difference]: With dead ends: 2640 [2024-11-19 17:16:34,350 INFO L226 Difference]: Without dead ends: 1450 [2024-11-19 17:16:34,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 17:16:34,352 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 65 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:34,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 744 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:16:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2024-11-19 17:16:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2024-11-19 17:16:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1419 states have (on average 1.2501761804087386) internal successors, (1774), 1423 states have internal predecessors, (1774), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 17:16:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1820 transitions. [2024-11-19 17:16:34,374 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1820 transitions. Word has length 195 [2024-11-19 17:16:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:34,374 INFO L471 AbstractCegarLoop]: Abstraction has 1450 states and 1820 transitions. [2024-11-19 17:16:34,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1820 transitions. [2024-11-19 17:16:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-19 17:16:34,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:34,376 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:34,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 17:16:34,377 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:34,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1559404560, now seen corresponding path program 1 times [2024-11-19 17:16:34,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:34,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094958142] [2024-11-19 17:16:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:34,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:34,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:34,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:34,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 17:16:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:34,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 17:16:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-19 17:16:34,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094958142] [2024-11-19 17:16:34,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094958142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247358302] [2024-11-19 17:16:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:34,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:34,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:34,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 17:16:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:35,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 17:16:35,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-19 17:16:35,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:16:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-19 17:16:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247358302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:16:35,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:16:35,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 15 [2024-11-19 17:16:35,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393509750] [2024-11-19 17:16:35,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:16:35,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 17:16:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 17:16:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-19 17:16:35,423 INFO L87 Difference]: Start difference. First operand 1450 states and 1820 transitions. Second operand has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 12 states have internal predecessors, (136), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:36,357 INFO L93 Difference]: Finished difference Result 2841 states and 3573 transitions. [2024-11-19 17:16:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 17:16:36,357 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 12 states have internal predecessors, (136), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 195 [2024-11-19 17:16:36,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:36,362 INFO L225 Difference]: With dead ends: 2841 [2024-11-19 17:16:36,362 INFO L226 Difference]: Without dead ends: 1471 [2024-11-19 17:16:36,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 390 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-19 17:16:36,364 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 121 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:36,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 898 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 17:16:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2024-11-19 17:16:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1471. [2024-11-19 17:16:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1437 states have (on average 1.2491301322199027) internal successors, (1795), 1441 states have internal predecessors, (1795), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-19 17:16:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1847 transitions. [2024-11-19 17:16:36,400 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1847 transitions. Word has length 195 [2024-11-19 17:16:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:36,400 INFO L471 AbstractCegarLoop]: Abstraction has 1471 states and 1847 transitions. [2024-11-19 17:16:36,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 12 states have internal predecessors, (136), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:36,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1847 transitions. [2024-11-19 17:16:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-19 17:16:36,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:36,403 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:36,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 17:16:36,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:36,606 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:36,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1424398144, now seen corresponding path program 2 times [2024-11-19 17:16:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:36,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564904713] [2024-11-19 17:16:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:36,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:36,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:36,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:36,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:36,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-19 17:16:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:36,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-19 17:16:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 17:16:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:36,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564904713] [2024-11-19 17:16:36,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564904713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:36,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133764480] [2024-11-19 17:16:36,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:16:36,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:36,834 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:36,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 17:16:37,672 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:16:37,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:16:37,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 17:16:37,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-19 17:16:37,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:16:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 17:16:37,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133764480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:16:37,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:16:37,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-11-19 17:16:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753817751] [2024-11-19 17:16:37,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:16:37,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 17:16:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 17:16:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-19 17:16:37,739 INFO L87 Difference]: Start difference. First operand 1471 states and 1847 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 9 states have internal predecessors, (124), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:38,472 INFO L93 Difference]: Finished difference Result 2849 states and 3586 transitions. [2024-11-19 17:16:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 17:16:38,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 9 states have internal predecessors, (124), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 204 [2024-11-19 17:16:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:38,476 INFO L225 Difference]: With dead ends: 2849 [2024-11-19 17:16:38,476 INFO L226 Difference]: Without dead ends: 1499 [2024-11-19 17:16:38,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 17:16:38,478 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 108 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:38,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 837 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 17:16:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2024-11-19 17:16:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1499. [2024-11-19 17:16:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1461 states have (on average 1.2477754962354553) internal successors, (1823), 1465 states have internal predecessors, (1823), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-19 17:16:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1883 transitions. [2024-11-19 17:16:38,538 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1883 transitions. Word has length 204 [2024-11-19 17:16:38,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:38,539 INFO L471 AbstractCegarLoop]: Abstraction has 1499 states and 1883 transitions. [2024-11-19 17:16:38,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 9 states have internal predecessors, (124), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1883 transitions. [2024-11-19 17:16:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-19 17:16:38,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:38,541 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:38,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 17:16:38,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 17:16:38,742 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:38,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2135611200, now seen corresponding path program 3 times [2024-11-19 17:16:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:38,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477860852] [2024-11-19 17:16:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:38,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:38,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:38,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:39,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-19 17:16:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:39,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-19 17:16:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 17:16:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477860852] [2024-11-19 17:16:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477860852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253539832] [2024-11-19 17:16:39,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:16:39,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:39,040 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:39,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 17:16:39,768 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 17:16:39,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:16:39,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 17:16:39,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:40,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 28 [2024-11-19 17:16:40,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:16:40,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 40 [2024-11-19 17:16:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2024-11-19 17:16:40,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:16:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253539832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:16:40,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:16:40,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2024-11-19 17:16:40,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203345345] [2024-11-19 17:16:40,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:16:40,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 17:16:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 17:16:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-19 17:16:40,389 INFO L87 Difference]: Start difference. First operand 1499 states and 1883 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 17:16:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:41,482 INFO L93 Difference]: Finished difference Result 2907 states and 3659 transitions. [2024-11-19 17:16:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 17:16:41,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 216 [2024-11-19 17:16:41,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:41,486 INFO L225 Difference]: With dead ends: 2907 [2024-11-19 17:16:41,486 INFO L226 Difference]: Without dead ends: 1662 [2024-11-19 17:16:41,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-19 17:16:41,488 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 287 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:41,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 954 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 17:16:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2024-11-19 17:16:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1583. [2024-11-19 17:16:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1527 states have (on average 1.248853962017027) internal successors, (1907), 1545 states have internal predecessors, (1907), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 31 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-19 17:16:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2001 transitions. [2024-11-19 17:16:41,522 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2001 transitions. Word has length 216 [2024-11-19 17:16:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:41,522 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2001 transitions. [2024-11-19 17:16:41,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 17:16:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2001 transitions. [2024-11-19 17:16:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-19 17:16:41,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:41,525 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:41,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 17:16:41,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 17:16:41,726 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:41,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -891370388, now seen corresponding path program 1 times [2024-11-19 17:16:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:41,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356846024] [2024-11-19 17:16:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:41,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:41,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:41,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:41,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:41,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-19 17:16:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:42,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-19 17:16:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 17:16:42,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356846024] [2024-11-19 17:16:42,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356846024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691498187] [2024-11-19 17:16:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:42,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:42,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:42,028 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:42,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 17:16:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:42,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 17:16:42,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-19 17:16:42,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:16:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 17:16:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691498187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:16:42,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:16:42,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 15 [2024-11-19 17:16:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723007745] [2024-11-19 17:16:42,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:16:42,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 17:16:42,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 17:16:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-19 17:16:42,812 INFO L87 Difference]: Start difference. First operand 1583 states and 2001 transitions. Second operand has 15 states, 15 states have (on average 9.2) internal successors, (138), 12 states have internal predecessors, (138), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:43,473 INFO L93 Difference]: Finished difference Result 2986 states and 3776 transitions. [2024-11-19 17:16:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 17:16:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.2) internal successors, (138), 12 states have internal predecessors, (138), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 218 [2024-11-19 17:16:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:43,477 INFO L225 Difference]: With dead ends: 2986 [2024-11-19 17:16:43,478 INFO L226 Difference]: Without dead ends: 1616 [2024-11-19 17:16:43,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 436 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-19 17:16:43,480 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 135 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:43,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 609 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:16:43,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2024-11-19 17:16:43,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1616. [2024-11-19 17:16:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1554 states have (on average 1.2483912483912485) internal successors, (1940), 1575 states have internal predecessors, (1940), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (53), 34 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-19 17:16:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2046 transitions. [2024-11-19 17:16:43,519 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2046 transitions. Word has length 218 [2024-11-19 17:16:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:43,519 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 2046 transitions. [2024-11-19 17:16:43,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.2) internal successors, (138), 12 states have internal predecessors, (138), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 17:16:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2046 transitions. [2024-11-19 17:16:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-19 17:16:43,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:43,527 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:43,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 17:16:43,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:43,732 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:43,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:43,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1823132012, now seen corresponding path program 2 times [2024-11-19 17:16:43,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:43,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676098750] [2024-11-19 17:16:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:43,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:43,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:43,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:44,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-19 17:16:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:44,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-19 17:16:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-19 17:16:44,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:44,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676098750] [2024-11-19 17:16:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676098750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:44,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000136646] [2024-11-19 17:16:44,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:16:44,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:44,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:44,043 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:44,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 17:16:44,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:16:44,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:16:44,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 17:16:44,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-19 17:16:44,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:16:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-19 17:16:45,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000136646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:16:45,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:16:45,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2024-11-19 17:16:45,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240675532] [2024-11-19 17:16:45,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:16:45,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 17:16:45,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:16:45,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 17:16:45,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-19 17:16:45,128 INFO L87 Difference]: Start difference. First operand 1616 states and 2046 transitions. Second operand has 15 states, 15 states have (on average 16.666666666666668) internal successors, (250), 12 states have internal predecessors, (250), 1 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:16:46,046 INFO L93 Difference]: Finished difference Result 9045 states and 11400 transitions. [2024-11-19 17:16:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 17:16:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.666666666666668) internal successors, (250), 12 states have internal predecessors, (250), 1 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 227 [2024-11-19 17:16:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:16:46,060 INFO L225 Difference]: With dead ends: 9045 [2024-11-19 17:16:46,060 INFO L226 Difference]: Without dead ends: 9039 [2024-11-19 17:16:46,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-19 17:16:46,064 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 516 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 17:16:46,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 786 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 17:16:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9039 states. [2024-11-19 17:16:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9039 to 7136. [2024-11-19 17:16:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7074 states have (on average 1.2653378569409104) internal successors, (8951), 7095 states have internal predecessors, (8951), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (53), 34 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-19 17:16:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 9057 transitions. [2024-11-19 17:16:46,194 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 9057 transitions. Word has length 227 [2024-11-19 17:16:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:16:46,194 INFO L471 AbstractCegarLoop]: Abstraction has 7136 states and 9057 transitions. [2024-11-19 17:16:46,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.666666666666668) internal successors, (250), 12 states have internal predecessors, (250), 1 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 17:16:46,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 9057 transitions. [2024-11-19 17:16:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-19 17:16:46,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:16:46,204 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:16:46,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 17:16:46,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:46,409 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:16:46,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:16:46,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1101535030, now seen corresponding path program 3 times [2024-11-19 17:16:46,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:16:46,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76310828] [2024-11-19 17:16:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:16:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:16:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:46,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-19 17:16:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:46,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-19 17:16:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:46,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 17:16:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:46,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-19 17:16:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:46,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-19 17:16:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:16:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 199 proven. 28 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-19 17:16:46,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:16:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76310828] [2024-11-19 17:16:46,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76310828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:16:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980309621] [2024-11-19 17:16:46,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:16:46,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:16:46,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:16:46,656 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:16:46,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 17:16:47,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 17:16:47,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:16:47,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 17:16:47,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:16:47,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 134 [2024-11-19 17:16:48,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:16:48,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 121 treesize of output 144 [2024-11-19 17:16:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2024-11-19 17:16:48,983 INFO L311 TraceCheckSpWp]: Computing backward predicates...