./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'afac0863a681e4712e7bffaf04a415cd693c6153e1fe439605f11a4c250fdcc1'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 afac0863a681e4712e7bffaf04a415cd693c6153e1fe439605f11a4c250fdcc1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 00:28:28,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 00:28:28,612 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 00:28:28,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 00:28:28,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 00:28:28,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 00:28:28,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 00:28:28,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 00:28:28,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 00:28:28,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 00:28:28,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 00:28:28,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 00:28:28,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 00:28:28,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 00:28:28,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 00:28:28,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 00:28:28,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 00:28:28,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 00:28:28,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 00:28:28,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 00:28:28,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 00:28:28,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 00:28:28,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 00:28:28,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 00:28:28,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 00:28:28,652 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> afac0863a681e4712e7bffaf04a415cd693c6153e1fe439605f11a4c250fdcc1 [2024-11-07 00:28:28,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 00:28:28,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 00:28:28,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 00:28:28,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 00:28:28,933 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 00:28:28,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-07 00:28:30,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 00:28:30,652 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 00:28:30,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-07 00:28:30,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/597b3d384/dba8f7887e0740b68bb45675a7b0de32/FLAG6f67012a0 [2024-11-07 00:28:30,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/597b3d384/dba8f7887e0740b68bb45675a7b0de32 [2024-11-07 00:28:30,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 00:28:30,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 00:28:30,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 00:28:30,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 00:28:30,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 00:28:30,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:30" (1/1) ... [2024-11-07 00:28:30,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1196702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:30, skipping insertion in model container [2024-11-07 00:28:30,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:30" (1/1) ... [2024-11-07 00:28:30,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 00:28:30,918 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4069,4082] [2024-11-07 00:28:30,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 00:28:30,962 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 00:28:30,991 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4069,4082] [2024-11-07 00:28:30,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 00:28:31,013 INFO L204 MainTranslator]: Completed translation [2024-11-07 00:28:31,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31 WrapperNode [2024-11-07 00:28:31,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 00:28:31,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 00:28:31,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 00:28:31,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 00:28:31,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,068 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 296 [2024-11-07 00:28:31,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 00:28:31,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 00:28:31,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 00:28:31,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 00:28:31,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,097 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 00:28:31,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 00:28:31,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 00:28:31,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 00:28:31,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 00:28:31,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (1/1) ... [2024-11-07 00:28:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 00:28:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:28:31,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 00:28:31,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 00:28:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 00:28:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 00:28:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 00:28:31,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 00:28:31,269 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 00:28:31,270 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 00:28:31,600 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-07 00:28:31,600 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 00:28:31,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 00:28:31,614 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 00:28:31,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:28:31 BoogieIcfgContainer [2024-11-07 00:28:31,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 00:28:31,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 00:28:31,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 00:28:31,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 00:28:31,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:28:30" (1/3) ... [2024-11-07 00:28:31,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736b1543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:28:31, skipping insertion in model container [2024-11-07 00:28:31,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:31" (2/3) ... [2024-11-07 00:28:31,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736b1543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:28:31, skipping insertion in model container [2024-11-07 00:28:31,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:28:31" (3/3) ... [2024-11-07 00:28:31,623 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-07 00:28:31,637 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 00:28:31,637 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 00:28:31,699 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 00:28:31,710 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;@249dd292, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 00:28:31,712 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 00:28:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 00:28:31,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:31,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:31,726 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:31,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1007825277, now seen corresponding path program 1 times [2024-11-07 00:28:31,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:31,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470472862] [2024-11-07 00:28:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470472862] [2024-11-07 00:28:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470472862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:28:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412332476] [2024-11-07 00:28:32,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:32,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:28:32,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:28:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:32,124 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:32,172 INFO L93 Difference]: Finished difference Result 140 states and 224 transitions. [2024-11-07 00:28:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:28:32,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-07 00:28:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:32,182 INFO L225 Difference]: With dead ends: 140 [2024-11-07 00:28:32,185 INFO L226 Difference]: Without dead ends: 91 [2024-11-07 00:28:32,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:32,191 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 68 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:32,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 215 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-07 00:28:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-11-07 00:28:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 88 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 130 transitions. [2024-11-07 00:28:32,228 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 130 transitions. Word has length 36 [2024-11-07 00:28:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:32,232 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 130 transitions. [2024-11-07 00:28:32,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 130 transitions. [2024-11-07 00:28:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-07 00:28:32,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:32,234 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:32,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 00:28:32,234 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:32,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1176817218, now seen corresponding path program 1 times [2024-11-07 00:28:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:32,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273322593] [2024-11-07 00:28:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:32,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273322593] [2024-11-07 00:28:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273322593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:32,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:32,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:28:32,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66310500] [2024-11-07 00:28:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:32,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:28:32,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:28:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:32,389 INFO L87 Difference]: Start difference. First operand 89 states and 130 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:32,428 INFO L93 Difference]: Finished difference Result 213 states and 326 transitions. [2024-11-07 00:28:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:28:32,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-07 00:28:32,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:32,430 INFO L225 Difference]: With dead ends: 213 [2024-11-07 00:28:32,431 INFO L226 Difference]: Without dead ends: 143 [2024-11-07 00:28:32,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:32,432 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 48 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:32,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 182 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-07 00:28:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2024-11-07 00:28:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.5142857142857142) internal successors, (212), 140 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 212 transitions. [2024-11-07 00:28:32,451 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 212 transitions. Word has length 37 [2024-11-07 00:28:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:32,451 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 212 transitions. [2024-11-07 00:28:32,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 212 transitions. [2024-11-07 00:28:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-07 00:28:32,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:32,455 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:32,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 00:28:32,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:32,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash 761408425, now seen corresponding path program 1 times [2024-11-07 00:28:32,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:32,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27622655] [2024-11-07 00:28:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:32,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:32,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27622655] [2024-11-07 00:28:32,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27622655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:32,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:32,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:28:32,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623520721] [2024-11-07 00:28:32,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:32,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:28:32,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:32,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:28:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:32,614 INFO L87 Difference]: Start difference. First operand 141 states and 212 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:32,648 INFO L93 Difference]: Finished difference Result 353 states and 546 transitions. [2024-11-07 00:28:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:28:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-07 00:28:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:32,653 INFO L225 Difference]: With dead ends: 353 [2024-11-07 00:28:32,653 INFO L226 Difference]: Without dead ends: 231 [2024-11-07 00:28:32,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:32,655 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 43 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:32,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 178 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-07 00:28:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2024-11-07 00:28:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.5263157894736843) internal successors, (348), 228 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 348 transitions. [2024-11-07 00:28:32,679 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 348 transitions. Word has length 38 [2024-11-07 00:28:32,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:32,680 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 348 transitions. [2024-11-07 00:28:32,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 348 transitions. [2024-11-07 00:28:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-07 00:28:32,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:32,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:32,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 00:28:32,681 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:32,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2014631486, now seen corresponding path program 1 times [2024-11-07 00:28:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:32,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301195734] [2024-11-07 00:28:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:32,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301195734] [2024-11-07 00:28:32,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301195734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:32,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:32,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:28:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285775623] [2024-11-07 00:28:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:32,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:28:32,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:28:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:32,855 INFO L87 Difference]: Start difference. First operand 229 states and 348 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:33,006 INFO L93 Difference]: Finished difference Result 1489 states and 2322 transitions. [2024-11-07 00:28:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 00:28:33,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-07 00:28:33,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:33,013 INFO L225 Difference]: With dead ends: 1489 [2024-11-07 00:28:33,014 INFO L226 Difference]: Without dead ends: 1279 [2024-11-07 00:28:33,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 00:28:33,016 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 423 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:33,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 419 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 00:28:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2024-11-07 00:28:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 437. [2024-11-07 00:28:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5137614678899083) internal successors, (660), 436 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 660 transitions. [2024-11-07 00:28:33,067 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 660 transitions. Word has length 39 [2024-11-07 00:28:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:33,067 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 660 transitions. [2024-11-07 00:28:33,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 660 transitions. [2024-11-07 00:28:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 00:28:33,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:33,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:33,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 00:28:33,068 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:33,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:33,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1891215654, now seen corresponding path program 1 times [2024-11-07 00:28:33,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:33,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688469669] [2024-11-07 00:28:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:33,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:33,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688469669] [2024-11-07 00:28:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688469669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:33,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:33,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:28:33,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576721785] [2024-11-07 00:28:33,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:33,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:28:33,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:28:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:33,194 INFO L87 Difference]: Start difference. First operand 437 states and 660 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:33,228 INFO L93 Difference]: Finished difference Result 1055 states and 1604 transitions. [2024-11-07 00:28:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:28:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-07 00:28:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:33,231 INFO L225 Difference]: With dead ends: 1055 [2024-11-07 00:28:33,234 INFO L226 Difference]: Without dead ends: 637 [2024-11-07 00:28:33,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:33,239 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:33,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 154 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-07 00:28:33,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 635. [2024-11-07 00:28:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.498422712933754) internal successors, (950), 634 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 950 transitions. [2024-11-07 00:28:33,280 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 950 transitions. Word has length 41 [2024-11-07 00:28:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:33,280 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 950 transitions. [2024-11-07 00:28:33,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,281 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 950 transitions. [2024-11-07 00:28:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 00:28:33,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:33,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:33,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 00:28:33,282 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:33,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1870212999, now seen corresponding path program 1 times [2024-11-07 00:28:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834078145] [2024-11-07 00:28:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:33,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834078145] [2024-11-07 00:28:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834078145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:33,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:33,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:28:33,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979040767] [2024-11-07 00:28:33,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:33,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:28:33,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:28:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:33,532 INFO L87 Difference]: Start difference. First operand 635 states and 950 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:33,616 INFO L93 Difference]: Finished difference Result 1251 states and 1880 transitions. [2024-11-07 00:28:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:28:33,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-07 00:28:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:33,623 INFO L225 Difference]: With dead ends: 1251 [2024-11-07 00:28:33,624 INFO L226 Difference]: Without dead ends: 637 [2024-11-07 00:28:33,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-07 00:28:33,627 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 82 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:33,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 195 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-07 00:28:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 635. [2024-11-07 00:28:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.4794952681388012) internal successors, (938), 634 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 938 transitions. [2024-11-07 00:28:33,647 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 938 transitions. Word has length 41 [2024-11-07 00:28:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:33,647 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 938 transitions. [2024-11-07 00:28:33,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 938 transitions. [2024-11-07 00:28:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 00:28:33,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:33,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:33,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 00:28:33,651 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:33,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:33,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2143937547, now seen corresponding path program 1 times [2024-11-07 00:28:33,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:33,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159001108] [2024-11-07 00:28:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159001108] [2024-11-07 00:28:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159001108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:33,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 00:28:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172840466] [2024-11-07 00:28:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:33,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:28:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:28:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:33,784 INFO L87 Difference]: Start difference. First operand 635 states and 938 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:33,862 INFO L93 Difference]: Finished difference Result 1249 states and 1855 transitions. [2024-11-07 00:28:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:28:33,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-07 00:28:33,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:33,866 INFO L225 Difference]: With dead ends: 1249 [2024-11-07 00:28:33,867 INFO L226 Difference]: Without dead ends: 635 [2024-11-07 00:28:33,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:28:33,869 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 200 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:33,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 61 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 00:28:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-07 00:28:33,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2024-11-07 00:28:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.4605678233438486) internal successors, (926), 634 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 926 transitions. [2024-11-07 00:28:33,900 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 926 transitions. Word has length 42 [2024-11-07 00:28:33,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:33,900 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 926 transitions. [2024-11-07 00:28:33,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 926 transitions. [2024-11-07 00:28:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 00:28:33,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:33,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:33,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 00:28:33,901 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:33,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1278405158, now seen corresponding path program 1 times [2024-11-07 00:28:33,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:33,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456116461] [2024-11-07 00:28:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:33,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456116461] [2024-11-07 00:28:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456116461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:34,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:34,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:28:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965479783] [2024-11-07 00:28:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:34,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:28:34,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:34,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:28:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:34,205 INFO L87 Difference]: Start difference. First operand 635 states and 926 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:34,237 INFO L93 Difference]: Finished difference Result 669 states and 975 transitions. [2024-11-07 00:28:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:28:34,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-07 00:28:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:34,242 INFO L225 Difference]: With dead ends: 669 [2024-11-07 00:28:34,242 INFO L226 Difference]: Without dead ends: 667 [2024-11-07 00:28:34,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:34,244 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:34,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-07 00:28:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-07 00:28:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.4324324324324325) internal successors, (954), 666 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 954 transitions. [2024-11-07 00:28:34,261 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 954 transitions. Word has length 42 [2024-11-07 00:28:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:34,262 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 954 transitions. [2024-11-07 00:28:34,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 954 transitions. [2024-11-07 00:28:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-07 00:28:34,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:34,266 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:34,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 00:28:34,266 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:34,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1616122195, now seen corresponding path program 1 times [2024-11-07 00:28:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693252392] [2024-11-07 00:28:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 00:28:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:34,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693252392] [2024-11-07 00:28:34,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693252392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:28:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087124944] [2024-11-07 00:28:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:34,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:28:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:28:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:34,428 INFO L87 Difference]: Start difference. First operand 667 states and 954 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:34,503 INFO L93 Difference]: Finished difference Result 2735 states and 3928 transitions. [2024-11-07 00:28:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:28:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-07 00:28:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:34,511 INFO L225 Difference]: With dead ends: 2735 [2024-11-07 00:28:34,511 INFO L226 Difference]: Without dead ends: 2089 [2024-11-07 00:28:34,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:28:34,513 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 213 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:34,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 325 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2024-11-07 00:28:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1311. [2024-11-07 00:28:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1310 states have (on average 1.4305343511450381) internal successors, (1874), 1310 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1874 transitions. [2024-11-07 00:28:34,556 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1874 transitions. Word has length 60 [2024-11-07 00:28:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:34,556 INFO L471 AbstractCegarLoop]: Abstraction has 1311 states and 1874 transitions. [2024-11-07 00:28:34,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1874 transitions. [2024-11-07 00:28:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-07 00:28:34,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:34,558 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:34,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 00:28:34,558 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:34,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:34,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1524898995, now seen corresponding path program 1 times [2024-11-07 00:28:34,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:34,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708358665] [2024-11-07 00:28:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:34,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 00:28:34,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:34,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708358665] [2024-11-07 00:28:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708358665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:34,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:34,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:28:34,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432332280] [2024-11-07 00:28:34,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:34,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:28:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:28:34,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:34,697 INFO L87 Difference]: Start difference. First operand 1311 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:34,782 INFO L93 Difference]: Finished difference Result 3379 states and 4848 transitions. [2024-11-07 00:28:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:28:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-07 00:28:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:34,792 INFO L225 Difference]: With dead ends: 3379 [2024-11-07 00:28:34,792 INFO L226 Difference]: Without dead ends: 2733 [2024-11-07 00:28:34,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:28:34,795 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 208 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:34,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 355 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2024-11-07 00:28:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2279. [2024-11-07 00:28:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.4240561896400352) internal successors, (3244), 2278 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3244 transitions. [2024-11-07 00:28:34,855 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3244 transitions. Word has length 60 [2024-11-07 00:28:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:34,855 INFO L471 AbstractCegarLoop]: Abstraction has 2279 states and 3244 transitions. [2024-11-07 00:28:34,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3244 transitions. [2024-11-07 00:28:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-07 00:28:34,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:34,857 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:34,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 00:28:34,857 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:34,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1912167623, now seen corresponding path program 1 times [2024-11-07 00:28:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:34,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711997778] [2024-11-07 00:28:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:34,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 00:28:34,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711997778] [2024-11-07 00:28:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711997778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:34,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:34,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:28:34,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777226956] [2024-11-07 00:28:34,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:34,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:28:34,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:34,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:28:34,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:28:34,990 INFO L87 Difference]: Start difference. First operand 2279 states and 3244 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:35,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:35,069 INFO L93 Difference]: Finished difference Result 3631 states and 5216 transitions. [2024-11-07 00:28:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:28:35,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-07 00:28:35,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:35,082 INFO L225 Difference]: With dead ends: 3631 [2024-11-07 00:28:35,082 INFO L226 Difference]: Without dead ends: 3181 [2024-11-07 00:28:35,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:28:35,085 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 207 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:35,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 330 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2024-11-07 00:28:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2727. [2024-11-07 00:28:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2726 states have (on average 1.4277329420396185) internal successors, (3892), 2726 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3892 transitions. [2024-11-07 00:28:35,148 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3892 transitions. Word has length 60 [2024-11-07 00:28:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:35,148 INFO L471 AbstractCegarLoop]: Abstraction has 2727 states and 3892 transitions. [2024-11-07 00:28:35,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3892 transitions. [2024-11-07 00:28:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 00:28:35,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:35,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:35,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 00:28:35,150 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:35,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:35,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1791952020, now seen corresponding path program 1 times [2024-11-07 00:28:35,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:35,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837388392] [2024-11-07 00:28:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:35,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837388392] [2024-11-07 00:28:35,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837388392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:28:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492241140] [2024-11-07 00:28:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:35,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:35,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:28:35,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:28:35,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 00:28:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:35,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 00:28:35,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:28:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:36,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:28:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492241140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:28:36,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:28:36,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-07 00:28:36,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024173061] [2024-11-07 00:28:36,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:28:36,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 00:28:36,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 00:28:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-07 00:28:36,965 INFO L87 Difference]: Start difference. First operand 2727 states and 3892 transitions. Second operand has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:37,682 INFO L93 Difference]: Finished difference Result 9729 states and 13803 transitions. [2024-11-07 00:28:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 00:28:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-07 00:28:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:37,710 INFO L225 Difference]: With dead ends: 9729 [2024-11-07 00:28:37,711 INFO L226 Difference]: Without dead ends: 7023 [2024-11-07 00:28:37,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 00:28:37,718 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 596 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:37,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 556 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 00:28:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7023 states. [2024-11-07 00:28:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7023 to 5817. [2024-11-07 00:28:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 5816 states have (on average 1.4126547455295735) internal successors, (8216), 5816 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 8216 transitions. [2024-11-07 00:28:37,899 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 8216 transitions. Word has length 61 [2024-11-07 00:28:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:37,900 INFO L471 AbstractCegarLoop]: Abstraction has 5817 states and 8216 transitions. [2024-11-07 00:28:37,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 8216 transitions. [2024-11-07 00:28:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 00:28:37,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:37,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:28:37,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 00:28:38,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 00:28:38,102 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:38,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2085128461, now seen corresponding path program 1 times [2024-11-07 00:28:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533376157] [2024-11-07 00:28:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:38,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 00:28:38,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533376157] [2024-11-07 00:28:38,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533376157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:28:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879443617] [2024-11-07 00:28:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:38,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:28:38,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:28:38,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 00:28:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:38,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 00:28:38,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:28:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 00:28:38,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:28:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 00:28:38,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879443617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:28:38,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:28:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-07 00:28:38,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475969771] [2024-11-07 00:28:38,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:28:38,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 00:28:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 00:28:38,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-07 00:28:38,822 INFO L87 Difference]: Start difference. First operand 5817 states and 8216 transitions. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:38,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:38,926 INFO L93 Difference]: Finished difference Result 17175 states and 24494 transitions. [2024-11-07 00:28:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 00:28:38,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-07 00:28:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:38,980 INFO L225 Difference]: With dead ends: 17175 [2024-11-07 00:28:38,980 INFO L226 Difference]: Without dead ends: 12889 [2024-11-07 00:28:38,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-07 00:28:38,994 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 281 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:38,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 470 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12889 states. [2024-11-07 00:28:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12889 to 12883. [2024-11-07 00:28:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12883 states, 12882 states have (on average 1.3861201676758268) internal successors, (17856), 12882 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12883 states to 12883 states and 17856 transitions. [2024-11-07 00:28:39,302 INFO L78 Accepts]: Start accepts. Automaton has 12883 states and 17856 transitions. Word has length 62 [2024-11-07 00:28:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:39,303 INFO L471 AbstractCegarLoop]: Abstraction has 12883 states and 17856 transitions. [2024-11-07 00:28:39,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 12883 states and 17856 transitions. [2024-11-07 00:28:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 00:28:39,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:39,305 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:39,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 00:28:39,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:39,511 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:39,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:39,511 INFO L85 PathProgramCache]: Analyzing trace with hash 653717303, now seen corresponding path program 1 times [2024-11-07 00:28:39,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:39,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245636587] [2024-11-07 00:28:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:39,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:39,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245636587] [2024-11-07 00:28:39,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245636587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:28:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637453728] [2024-11-07 00:28:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:39,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:39,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:28:39,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:28:39,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 00:28:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:40,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 00:28:40,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:28:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:40,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:28:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:40,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637453728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:28:40,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:28:40,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-07 00:28:40,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651813063] [2024-11-07 00:28:40,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:28:40,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 00:28:40,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:40,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 00:28:40,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-07 00:28:40,842 INFO L87 Difference]: Start difference. First operand 12883 states and 17856 transitions. Second operand has 21 states, 21 states have (on average 6.380952380952381) internal successors, (134), 20 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:41,772 INFO L93 Difference]: Finished difference Result 63807 states and 88525 transitions. [2024-11-07 00:28:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 00:28:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.380952380952381) internal successors, (134), 20 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-07 00:28:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:41,928 INFO L225 Difference]: With dead ends: 63807 [2024-11-07 00:28:41,928 INFO L226 Difference]: Without dead ends: 50945 [2024-11-07 00:28:41,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2024-11-07 00:28:41,966 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 1239 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:41,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 467 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 00:28:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50945 states. [2024-11-07 00:28:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50945 to 29627. [2024-11-07 00:28:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29627 states, 29626 states have (on average 1.3616080469857557) internal successors, (40339), 29626 states have internal predecessors, (40339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29627 states to 29627 states and 40339 transitions. [2024-11-07 00:28:42,826 INFO L78 Accepts]: Start accepts. Automaton has 29627 states and 40339 transitions. Word has length 62 [2024-11-07 00:28:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:42,826 INFO L471 AbstractCegarLoop]: Abstraction has 29627 states and 40339 transitions. [2024-11-07 00:28:42,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.380952380952381) internal successors, (134), 20 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 29627 states and 40339 transitions. [2024-11-07 00:28:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 00:28:42,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:42,829 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:42,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 00:28:43,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:43,030 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:43,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1807663409, now seen corresponding path program 1 times [2024-11-07 00:28:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213719027] [2024-11-07 00:28:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:43,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213719027] [2024-11-07 00:28:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213719027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:28:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417054764] [2024-11-07 00:28:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:43,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:43,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:28:43,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:28:43,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 00:28:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:43,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 00:28:43,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:28:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:43,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:28:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417054764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:28:44,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:28:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-07 00:28:44,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79906573] [2024-11-07 00:28:44,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:28:44,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 00:28:44,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 00:28:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-07 00:28:44,394 INFO L87 Difference]: Start difference. First operand 29627 states and 40339 transitions. Second operand has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:45,322 INFO L93 Difference]: Finished difference Result 123096 states and 168282 transitions. [2024-11-07 00:28:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 00:28:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-07 00:28:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:45,630 INFO L225 Difference]: With dead ends: 123096 [2024-11-07 00:28:45,630 INFO L226 Difference]: Without dead ends: 93490 [2024-11-07 00:28:45,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=386, Invalid=1174, Unknown=0, NotChecked=0, Total=1560 [2024-11-07 00:28:45,689 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 984 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:45,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 441 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 00:28:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93490 states. [2024-11-07 00:28:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93490 to 73802. [2024-11-07 00:28:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73802 states, 73801 states have (on average 1.3554016883240065) internal successors, (100030), 73801 states have internal predecessors, (100030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73802 states to 73802 states and 100030 transitions. [2024-11-07 00:28:47,010 INFO L78 Accepts]: Start accepts. Automaton has 73802 states and 100030 transitions. Word has length 62 [2024-11-07 00:28:47,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:47,010 INFO L471 AbstractCegarLoop]: Abstraction has 73802 states and 100030 transitions. [2024-11-07 00:28:47,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:47,011 INFO L276 IsEmpty]: Start isEmpty. Operand 73802 states and 100030 transitions. [2024-11-07 00:28:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 00:28:47,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:47,014 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:47,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 00:28:47,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 00:28:47,218 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:47,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1286750416, now seen corresponding path program 1 times [2024-11-07 00:28:47,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:47,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686662085] [2024-11-07 00:28:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:47,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 00:28:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686662085] [2024-11-07 00:28:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686662085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:47,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:47,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:28:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4810678] [2024-11-07 00:28:47,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:47,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:28:47,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:28:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:47,268 INFO L87 Difference]: Start difference. First operand 73802 states and 100030 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:47,672 INFO L93 Difference]: Finished difference Result 134468 states and 182697 transitions. [2024-11-07 00:28:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:28:47,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-07 00:28:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:47,786 INFO L225 Difference]: With dead ends: 134468 [2024-11-07 00:28:47,786 INFO L226 Difference]: Without dead ends: 60687 [2024-11-07 00:28:47,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:47,858 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 50 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:47,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 98 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60687 states. [2024-11-07 00:28:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60687 to 60687. [2024-11-07 00:28:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60687 states, 60686 states have (on average 1.3388260883894143) internal successors, (81248), 60686 states have internal predecessors, (81248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60687 states to 60687 states and 81248 transitions. [2024-11-07 00:28:49,353 INFO L78 Accepts]: Start accepts. Automaton has 60687 states and 81248 transitions. Word has length 63 [2024-11-07 00:28:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:49,354 INFO L471 AbstractCegarLoop]: Abstraction has 60687 states and 81248 transitions. [2024-11-07 00:28:49,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 60687 states and 81248 transitions. [2024-11-07 00:28:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 00:28:49,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:49,356 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:49,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 00:28:49,357 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:49,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1825583548, now seen corresponding path program 1 times [2024-11-07 00:28:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256037658] [2024-11-07 00:28:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:49,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:49,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256037658] [2024-11-07 00:28:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256037658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:49,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:49,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:28:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444825767] [2024-11-07 00:28:49,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:49,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:28:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:28:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:49,434 INFO L87 Difference]: Start difference. First operand 60687 states and 81248 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:49,840 INFO L93 Difference]: Finished difference Result 101940 states and 136566 transitions. [2024-11-07 00:28:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:28:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-07 00:28:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:49,911 INFO L225 Difference]: With dead ends: 101940 [2024-11-07 00:28:49,912 INFO L226 Difference]: Without dead ends: 41274 [2024-11-07 00:28:50,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:50,132 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 34 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 168 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 [2024-11-07 00:28:50,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 168 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41274 states. [2024-11-07 00:28:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41274 to 39572. [2024-11-07 00:28:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39572 states, 39571 states have (on average 1.320512496525233) internal successors, (52254), 39571 states have internal predecessors, (52254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39572 states to 39572 states and 52254 transitions. [2024-11-07 00:28:50,891 INFO L78 Accepts]: Start accepts. Automaton has 39572 states and 52254 transitions. Word has length 63 [2024-11-07 00:28:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:50,892 INFO L471 AbstractCegarLoop]: Abstraction has 39572 states and 52254 transitions. [2024-11-07 00:28:50,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 39572 states and 52254 transitions. [2024-11-07 00:28:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 00:28:50,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:50,895 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:50,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 00:28:50,895 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:50,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:50,896 INFO L85 PathProgramCache]: Analyzing trace with hash 392958652, now seen corresponding path program 1 times [2024-11-07 00:28:50,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:50,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911832122] [2024-11-07 00:28:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:51,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911832122] [2024-11-07 00:28:51,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911832122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:28:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023178656] [2024-11-07 00:28:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:51,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:51,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:28:51,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:28:51,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 00:28:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:51,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 00:28:51,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:28:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:52,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:28:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023178656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:28:53,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:28:53,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2024-11-07 00:28:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510344257] [2024-11-07 00:28:53,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:28:53,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 00:28:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 00:28:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2024-11-07 00:28:53,398 INFO L87 Difference]: Start difference. First operand 39572 states and 52254 transitions. Second operand has 32 states, 32 states have (on average 4.90625) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:54,953 INFO L93 Difference]: Finished difference Result 96669 states and 129223 transitions. [2024-11-07 00:28:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 00:28:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.90625) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-07 00:28:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:55,101 INFO L225 Difference]: With dead ends: 96669 [2024-11-07 00:28:55,102 INFO L226 Difference]: Without dead ends: 80869 [2024-11-07 00:28:55,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=611, Invalid=2581, Unknown=0, NotChecked=0, Total=3192 [2024-11-07 00:28:55,147 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 1949 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 00:28:55,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 1500 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 00:28:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80869 states. [2024-11-07 00:28:55,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80869 to 40074. [2024-11-07 00:28:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40074 states, 40073 states have (on average 1.3227609612457265) internal successors, (53007), 40073 states have internal predecessors, (53007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40074 states to 40074 states and 53007 transitions. [2024-11-07 00:28:56,006 INFO L78 Accepts]: Start accepts. Automaton has 40074 states and 53007 transitions. Word has length 63 [2024-11-07 00:28:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:56,006 INFO L471 AbstractCegarLoop]: Abstraction has 40074 states and 53007 transitions. [2024-11-07 00:28:56,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.90625) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 40074 states and 53007 transitions. [2024-11-07 00:28:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 00:28:56,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:56,008 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:56,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 00:28:56,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 00:28:56,208 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:56,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:56,209 INFO L85 PathProgramCache]: Analyzing trace with hash -196942823, now seen corresponding path program 1 times [2024-11-07 00:28:56,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:56,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914164746] [2024-11-07 00:28:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:56,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914164746] [2024-11-07 00:28:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914164746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:28:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:28:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:28:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140485371] [2024-11-07 00:28:56,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:28:56,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:28:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:28:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:28:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:56,282 INFO L87 Difference]: Start difference. First operand 40074 states and 53007 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:28:56,429 INFO L93 Difference]: Finished difference Result 58791 states and 77699 transitions. [2024-11-07 00:28:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:28:56,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-07 00:28:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:28:56,464 INFO L225 Difference]: With dead ends: 58791 [2024-11-07 00:28:56,464 INFO L226 Difference]: Without dead ends: 22796 [2024-11-07 00:28:56,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:28:56,497 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 29 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 153 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 [2024-11-07 00:28:56,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 153 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:28:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22796 states. [2024-11-07 00:28:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22796 to 22794. [2024-11-07 00:28:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22794 states, 22793 states have (on average 1.29302856140043) internal successors, (29472), 22793 states have internal predecessors, (29472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22794 states to 22794 states and 29472 transitions. [2024-11-07 00:28:56,875 INFO L78 Accepts]: Start accepts. Automaton has 22794 states and 29472 transitions. Word has length 63 [2024-11-07 00:28:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:28:56,876 INFO L471 AbstractCegarLoop]: Abstraction has 22794 states and 29472 transitions. [2024-11-07 00:28:56,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:28:56,876 INFO L276 IsEmpty]: Start isEmpty. Operand 22794 states and 29472 transitions. [2024-11-07 00:28:56,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 00:28:56,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:28:56,877 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:28:56,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 00:28:56,878 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:28:56,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:28:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1628783719, now seen corresponding path program 1 times [2024-11-07 00:28:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:28:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549418500] [2024-11-07 00:28:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:28:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:57,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:28:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549418500] [2024-11-07 00:28:57,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549418500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:28:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133555975] [2024-11-07 00:28:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:28:57,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:28:57,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:28:57,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:28:57,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 00:28:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:28:57,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-07 00:28:57,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:28:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:28:59,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133555975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:01,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 20] total 47 [2024-11-07 00:29:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726176233] [2024-11-07 00:29:01,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:01,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-07 00:29:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-07 00:29:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1885, Unknown=0, NotChecked=0, Total=2162 [2024-11-07 00:29:01,045 INFO L87 Difference]: Start difference. First operand 22794 states and 29472 transitions. Second operand has 47 states, 47 states have (on average 3.595744680851064) internal successors, (169), 47 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:11,063 INFO L93 Difference]: Finished difference Result 46994 states and 60242 transitions. [2024-11-07 00:29:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-07 00:29:11,064 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.595744680851064) internal successors, (169), 47 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-07 00:29:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:11,103 INFO L225 Difference]: With dead ends: 46994 [2024-11-07 00:29:11,103 INFO L226 Difference]: Without dead ends: 32786 [2024-11-07 00:29:11,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6807 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=4274, Invalid=19596, Unknown=0, NotChecked=0, Total=23870 [2024-11-07 00:29:11,132 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 3639 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:11,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3639 Valid, 2600 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-07 00:29:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32786 states. [2024-11-07 00:29:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32786 to 24719. [2024-11-07 00:29:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24719 states, 24718 states have (on average 1.2929444129783962) internal successors, (31959), 24718 states have internal predecessors, (31959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24719 states to 24719 states and 31959 transitions. [2024-11-07 00:29:11,453 INFO L78 Accepts]: Start accepts. Automaton has 24719 states and 31959 transitions. Word has length 63 [2024-11-07 00:29:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:11,454 INFO L471 AbstractCegarLoop]: Abstraction has 24719 states and 31959 transitions. [2024-11-07 00:29:11,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.595744680851064) internal successors, (169), 47 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 24719 states and 31959 transitions. [2024-11-07 00:29:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 00:29:11,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:11,455 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:29:11,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 00:29:11,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:11,656 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:11,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1762634149, now seen corresponding path program 1 times [2024-11-07 00:29:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292209087] [2024-11-07 00:29:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 00:29:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292209087] [2024-11-07 00:29:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292209087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135215710] [2024-11-07 00:29:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:11,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:11,693 INFO L87 Difference]: Start difference. First operand 24719 states and 31959 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:11,808 INFO L93 Difference]: Finished difference Result 39654 states and 51296 transitions. [2024-11-07 00:29:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:11,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-07 00:29:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:11,830 INFO L225 Difference]: With dead ends: 39654 [2024-11-07 00:29:11,830 INFO L226 Difference]: Without dead ends: 15013 [2024-11-07 00:29:11,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:11,850 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 50 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:11,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 96 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15013 states. [2024-11-07 00:29:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15013 to 15013. [2024-11-07 00:29:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15013 states, 15012 states have (on average 1.273314681588063) internal successors, (19115), 15012 states have internal predecessors, (19115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15013 states to 15013 states and 19115 transitions. [2024-11-07 00:29:12,005 INFO L78 Accepts]: Start accepts. Automaton has 15013 states and 19115 transitions. Word has length 64 [2024-11-07 00:29:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:12,005 INFO L471 AbstractCegarLoop]: Abstraction has 15013 states and 19115 transitions. [2024-11-07 00:29:12,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 15013 states and 19115 transitions. [2024-11-07 00:29:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-07 00:29:12,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:12,006 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:29:12,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 00:29:12,006 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:12,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:12,007 INFO L85 PathProgramCache]: Analyzing trace with hash -941448499, now seen corresponding path program 1 times [2024-11-07 00:29:12,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:12,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969717865] [2024-11-07 00:29:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:12,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 00:29:12,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:12,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969717865] [2024-11-07 00:29:12,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969717865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:12,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:12,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:12,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493961841] [2024-11-07 00:29:12,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:12,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:12,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:12,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:12,044 INFO L87 Difference]: Start difference. First operand 15013 states and 19115 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:12,110 INFO L93 Difference]: Finished difference Result 21497 states and 27589 transitions. [2024-11-07 00:29:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:12,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-07 00:29:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:12,119 INFO L225 Difference]: With dead ends: 21497 [2024-11-07 00:29:12,119 INFO L226 Difference]: Without dead ends: 6530 [2024-11-07 00:29:12,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:12,131 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:12,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:12,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2024-11-07 00:29:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 6530. [2024-11-07 00:29:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6530 states, 6529 states have (on average 1.2845765048246285) internal successors, (8387), 6529 states have internal predecessors, (8387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 8387 transitions. [2024-11-07 00:29:12,196 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 8387 transitions. Word has length 65 [2024-11-07 00:29:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:12,196 INFO L471 AbstractCegarLoop]: Abstraction has 6530 states and 8387 transitions. [2024-11-07 00:29:12,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 8387 transitions. [2024-11-07 00:29:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-07 00:29:12,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:12,198 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:29:12,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 00:29:12,198 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:12,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1925162041, now seen corresponding path program 1 times [2024-11-07 00:29:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:12,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100486289] [2024-11-07 00:29:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:12,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100486289] [2024-11-07 00:29:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100486289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:12,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114046142] [2024-11-07 00:29:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:12,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:12,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:12,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:29:12,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 00:29:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:12,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 00:29:12,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:12,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:12,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114046142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:12,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:12,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-07 00:29:12,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329441189] [2024-11-07 00:29:12,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:12,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 00:29:12,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 00:29:12,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-07 00:29:12,761 INFO L87 Difference]: Start difference. First operand 6530 states and 8387 transitions. Second operand has 11 states, 11 states have (on average 13.909090909090908) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:12,896 INFO L93 Difference]: Finished difference Result 10072 states and 12985 transitions. [2024-11-07 00:29:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 00:29:12,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.909090909090908) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-07 00:29:12,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:12,903 INFO L225 Difference]: With dead ends: 10072 [2024-11-07 00:29:12,903 INFO L226 Difference]: Without dead ends: 5704 [2024-11-07 00:29:12,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-07 00:29:12,907 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 202 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:12,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 238 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 00:29:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2024-11-07 00:29:12,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5702. [2024-11-07 00:29:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5701 states have (on average 1.2613576565514821) internal successors, (7191), 5701 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 7191 transitions. [2024-11-07 00:29:12,964 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 7191 transitions. Word has length 86 [2024-11-07 00:29:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:12,965 INFO L471 AbstractCegarLoop]: Abstraction has 5702 states and 7191 transitions. [2024-11-07 00:29:12,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.909090909090908) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 7191 transitions. [2024-11-07 00:29:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-07 00:29:12,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:12,967 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-07 00:29:12,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 00:29:13,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:13,167 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:13,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1571997298, now seen corresponding path program 1 times [2024-11-07 00:29:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:13,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735366476] [2024-11-07 00:29:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:13,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:13,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735366476] [2024-11-07 00:29:13,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735366476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900626054] [2024-11-07 00:29:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:13,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:13,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:13,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:29:13,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 00:29:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:13,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 00:29:13,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:14,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:15,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900626054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:15,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:15,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2024-11-07 00:29:15,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943463590] [2024-11-07 00:29:15,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:15,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 00:29:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:15,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 00:29:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2024-11-07 00:29:15,502 INFO L87 Difference]: Start difference. First operand 5702 states and 7191 transitions. Second operand has 30 states, 30 states have (on average 8.8) internal successors, (264), 29 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:18,307 INFO L93 Difference]: Finished difference Result 22937 states and 29156 transitions. [2024-11-07 00:29:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-07 00:29:18,308 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.8) internal successors, (264), 29 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-07 00:29:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:18,321 INFO L225 Difference]: With dead ends: 22937 [2024-11-07 00:29:18,321 INFO L226 Difference]: Without dead ends: 17375 [2024-11-07 00:29:18,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1896, Invalid=9024, Unknown=0, NotChecked=0, Total=10920 [2024-11-07 00:29:18,329 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1844 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:18,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 1266 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 00:29:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17375 states. [2024-11-07 00:29:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17375 to 10603. [2024-11-07 00:29:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10603 states, 10602 states have (on average 1.2424070930013205) internal successors, (13172), 10602 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10603 states to 10603 states and 13172 transitions. [2024-11-07 00:29:18,418 INFO L78 Accepts]: Start accepts. Automaton has 10603 states and 13172 transitions. Word has length 106 [2024-11-07 00:29:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:18,418 INFO L471 AbstractCegarLoop]: Abstraction has 10603 states and 13172 transitions. [2024-11-07 00:29:18,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.8) internal successors, (264), 29 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 10603 states and 13172 transitions. [2024-11-07 00:29:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-07 00:29:18,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:18,420 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:29:18,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 00:29:18,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:18,621 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:18,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1476103037, now seen corresponding path program 1 times [2024-11-07 00:29:18,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:18,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152450325] [2024-11-07 00:29:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152450325] [2024-11-07 00:29:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152450325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901486010] [2024-11-07 00:29:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:19,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:19,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:29:19,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 00:29:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:19,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-07 00:29:19,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:21,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901486010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:24,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 24] total 60 [2024-11-07 00:29:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656562429] [2024-11-07 00:29:24,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:24,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-07 00:29:24,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-07 00:29:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=3271, Unknown=0, NotChecked=0, Total=3540 [2024-11-07 00:29:24,448 INFO L87 Difference]: Start difference. First operand 10603 states and 13172 transitions. Second operand has 60 states, 60 states have (on average 4.966666666666667) internal successors, (298), 60 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:27,508 INFO L93 Difference]: Finished difference Result 23875 states and 29659 transitions. [2024-11-07 00:29:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-07 00:29:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.966666666666667) internal successors, (298), 60 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-07 00:29:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:27,527 INFO L225 Difference]: With dead ends: 23875 [2024-11-07 00:29:27,527 INFO L226 Difference]: Without dead ends: 18243 [2024-11-07 00:29:27,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=945, Invalid=8955, Unknown=0, NotChecked=0, Total=9900 [2024-11-07 00:29:27,538 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 490 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:27,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2821 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 00:29:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18243 states. [2024-11-07 00:29:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18243 to 12796. [2024-11-07 00:29:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12796 states, 12795 states have (on average 1.2370457209847596) internal successors, (15828), 12795 states have internal predecessors, (15828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12796 states to 12796 states and 15828 transitions. [2024-11-07 00:29:27,706 INFO L78 Accepts]: Start accepts. Automaton has 12796 states and 15828 transitions. Word has length 106 [2024-11-07 00:29:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:27,707 INFO L471 AbstractCegarLoop]: Abstraction has 12796 states and 15828 transitions. [2024-11-07 00:29:27,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.966666666666667) internal successors, (298), 60 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 12796 states and 15828 transitions. [2024-11-07 00:29:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-07 00:29:27,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:27,710 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:29:27,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 00:29:27,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:27,915 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:27,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash -92914870, now seen corresponding path program 1 times [2024-11-07 00:29:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359603336] [2024-11-07 00:29:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-07 00:29:28,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:28,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359603336] [2024-11-07 00:29:28,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359603336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:28,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:28,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:28,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985232258] [2024-11-07 00:29:28,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:28,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:28,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:28,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:28,019 INFO L87 Difference]: Start difference. First operand 12796 states and 15828 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:28,071 INFO L93 Difference]: Finished difference Result 17770 states and 21997 transitions. [2024-11-07 00:29:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:28,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-07 00:29:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:28,078 INFO L225 Difference]: With dead ends: 17770 [2024-11-07 00:29:28,079 INFO L226 Difference]: Without dead ends: 5415 [2024-11-07 00:29:28,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:28,088 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 135 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 [2024-11-07 00:29:28,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 135 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:28,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2024-11-07 00:29:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 5413. [2024-11-07 00:29:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5412 states have (on average 1.216740576496674) internal successors, (6585), 5412 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 6585 transitions. [2024-11-07 00:29:28,164 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 6585 transitions. Word has length 107 [2024-11-07 00:29:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:28,165 INFO L471 AbstractCegarLoop]: Abstraction has 5413 states and 6585 transitions. [2024-11-07 00:29:28,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 6585 transitions. [2024-11-07 00:29:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-07 00:29:28,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:28,167 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-11-07 00:29:28,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-07 00:29:28,167 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:28,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 658992184, now seen corresponding path program 1 times [2024-11-07 00:29:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714419260] [2024-11-07 00:29:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714419260] [2024-11-07 00:29:28,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714419260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321603882] [2024-11-07 00:29:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:28,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:28,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:28,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:29:28,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 00:29:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:28,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 00:29:28,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 41 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:29,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:30,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321603882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:30,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:30,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-07 00:29:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783415876] [2024-11-07 00:29:30,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:30,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 00:29:30,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 00:29:30,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2024-11-07 00:29:30,513 INFO L87 Difference]: Start difference. First operand 5413 states and 6585 transitions. Second operand has 29 states, 29 states have (on average 9.379310344827585) internal successors, (272), 28 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:30,927 INFO L93 Difference]: Finished difference Result 8539 states and 10466 transitions. [2024-11-07 00:29:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 00:29:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.379310344827585) internal successors, (272), 28 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-07 00:29:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:30,931 INFO L225 Difference]: With dead ends: 8539 [2024-11-07 00:29:30,931 INFO L226 Difference]: Without dead ends: 4974 [2024-11-07 00:29:30,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 00:29:30,935 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 393 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:30,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 761 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 00:29:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4974 states. [2024-11-07 00:29:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4974 to 4970. [2024-11-07 00:29:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 4969 states have (on average 1.197222781243711) internal successors, (5949), 4969 states have internal predecessors, (5949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 5949 transitions. [2024-11-07 00:29:30,973 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 5949 transitions. Word has length 107 [2024-11-07 00:29:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:30,973 INFO L471 AbstractCegarLoop]: Abstraction has 4970 states and 5949 transitions. [2024-11-07 00:29:30,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.379310344827585) internal successors, (272), 28 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 5949 transitions. [2024-11-07 00:29:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-07 00:29:30,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:30,975 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-07 00:29:30,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 00:29:31,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-07 00:29:31,175 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:31,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash -273349543, now seen corresponding path program 1 times [2024-11-07 00:29:31,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:31,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028327768] [2024-11-07 00:29:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:31,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028327768] [2024-11-07 00:29:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028327768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694611532] [2024-11-07 00:29:31,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:31,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:31,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:31,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:29:31,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 00:29:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:31,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 00:29:31,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:34,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:36,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694611532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:36,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:36,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 52 [2024-11-07 00:29:36,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145017866] [2024-11-07 00:29:36,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:36,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-07 00:29:36,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:36,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-07 00:29:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2425, Unknown=0, NotChecked=0, Total=2652 [2024-11-07 00:29:36,207 INFO L87 Difference]: Start difference. First operand 4970 states and 5949 transitions. Second operand has 52 states, 52 states have (on average 5.788461538461538) internal successors, (301), 52 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:41,942 INFO L93 Difference]: Finished difference Result 8247 states and 9950 transitions. [2024-11-07 00:29:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-07 00:29:41,942 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.788461538461538) internal successors, (301), 52 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-07 00:29:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:41,948 INFO L225 Difference]: With dead ends: 8247 [2024-11-07 00:29:41,948 INFO L226 Difference]: Without dead ends: 6516 [2024-11-07 00:29:41,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2515 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1680, Invalid=8420, Unknown=0, NotChecked=0, Total=10100 [2024-11-07 00:29:41,951 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 2252 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:41,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 2134 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-07 00:29:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2024-11-07 00:29:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 6142. [2024-11-07 00:29:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 6141 states have (on average 1.1892199967432013) internal successors, (7303), 6141 states have internal predecessors, (7303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 7303 transitions. [2024-11-07 00:29:41,988 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 7303 transitions. Word has length 107 [2024-11-07 00:29:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:41,989 INFO L471 AbstractCegarLoop]: Abstraction has 6142 states and 7303 transitions. [2024-11-07 00:29:41,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.788461538461538) internal successors, (301), 52 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 7303 transitions. [2024-11-07 00:29:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-07 00:29:41,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:41,990 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-07 00:29:42,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-07 00:29:42,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 00:29:42,191 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:42,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:42,191 INFO L85 PathProgramCache]: Analyzing trace with hash 383379286, now seen corresponding path program 1 times [2024-11-07 00:29:42,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:42,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374852423] [2024-11-07 00:29:42,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:42,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:42,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:42,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374852423] [2024-11-07 00:29:42,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374852423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:42,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055524802] [2024-11-07 00:29:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:42,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:42,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:42,926 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:29:42,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 00:29:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:43,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-07 00:29:43,076 INFO L278 TraceCheckSpWp]: Computing forward predicates...