./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.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/weaver/popl20-bad-three-array-sum-alt.wvr.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', '20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3'] 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/weaver/popl20-bad-three-array-sum-alt.wvr.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 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:26:56,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:26:56,556 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:26:56,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:26:56,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:26:56,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:26:56,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:26:56,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:26:56,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:26:56,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:26:56,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:26:56,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:26:56,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:26:56,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:26:56,575 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:26:56,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:26:56,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:26:56,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:26:56,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:26:56,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:26:56,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:26:56,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:26:56,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:26:56,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:26:56,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:26:56,578 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 -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2024-11-07 11:26:56,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:26:56,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:26:56,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:26:56,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:26:56,826 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:26:56,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-07 11:26:58,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:26:58,269 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:26:58,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-07 11:26:58,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c894a8cd6/3418baf33dcc450c962a4809a83b262c/FLAGc9413fafe [2024-11-07 11:26:58,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c894a8cd6/3418baf33dcc450c962a4809a83b262c [2024-11-07 11:26:58,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:26:58,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:26:58,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:26:58,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:26:58,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:26:58,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71550543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58, skipping insertion in model container [2024-11-07 11:26:58,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,652 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:26:58,773 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/weaver/popl20-bad-three-array-sum-alt.wvr.c[2451,2464] [2024-11-07 11:26:58,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:26:58,790 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:26:58,812 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/weaver/popl20-bad-three-array-sum-alt.wvr.c[2451,2464] [2024-11-07 11:26:58,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:26:58,844 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:26:58,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58 WrapperNode [2024-11-07 11:26:58,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:26:58,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:26:58,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:26:58,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:26:58,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,899 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 265 [2024-11-07 11:26:58,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:26:58,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:26:58,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:26:58,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:26:58,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,909 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,930 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-07 11:26:58,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:26:58,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:26:58,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:26:58,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:26:58,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (1/1) ... [2024-11-07 11:26:58,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:26:58,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:59,021 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 11:26:59,031 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 11:26:59,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:26:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:26:59,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:26:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:26:59,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:26:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:26:59,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:26:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:26:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:26:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:26:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:26:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:26:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:26:59,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:26:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:26:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:26:59,052 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:26:59,166 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:26:59,167 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:26:59,532 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:26:59,533 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:26:59,892 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:26:59,895 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-07 11:26:59,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:26:59 BoogieIcfgContainer [2024-11-07 11:26:59,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:26:59,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:26:59,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:26:59,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:26:59,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:26:58" (1/3) ... [2024-11-07 11:26:59,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111bfe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:26:59, skipping insertion in model container [2024-11-07 11:26:59,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:58" (2/3) ... [2024-11-07 11:26:59,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111bfe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:26:59, skipping insertion in model container [2024-11-07 11:26:59,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:26:59" (3/3) ... [2024-11-07 11:26:59,904 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2024-11-07 11:26:59,916 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:26:59,916 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:26:59,917 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:26:59,965 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:26:59,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-11-07 11:27:00,030 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-07 11:27:00,033 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:27:00,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-11-07 11:27:00,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-11-07 11:27:00,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-11-07 11:27:00,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:27:00,061 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;@2ccb1527, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:27:00,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:27:00,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:27:00,079 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-07 11:27:00,080 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:27:00,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:00,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:00,082 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:00,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1078802292, now seen corresponding path program 1 times [2024-11-07 11:27:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345363797] [2024-11-07 11:27:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:00,535 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 11:27:00,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:00,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345363797] [2024-11-07 11:27:00,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345363797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:00,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:00,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:27:00,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652507676] [2024-11-07 11:27:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:00,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:27:00,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:27:00,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:27:00,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:00,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:00,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:00,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:00,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:00,698 INFO L124 PetriNetUnfolderBase]: 389/571 cut-off events. [2024-11-07 11:27:00,699 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-07 11:27:00,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 571 events. 389/571 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1809 event pairs, 124 based on Foata normal form. 1/419 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-07 11:27:00,706 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 38 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-11-07 11:27:00,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 207 flow [2024-11-07 11:27:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:27:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:27:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-07 11:27:00,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-11-07 11:27:00,720 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 56 transitions. [2024-11-07 11:27:00,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 207 flow [2024-11-07 11:27:00,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 44 transitions, 185 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:27:00,729 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 86 flow [2024-11-07 11:27:00,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-11-07 11:27:00,734 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-07 11:27:00,736 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 86 flow [2024-11-07 11:27:00,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:00,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:00,737 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:00,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:27:00,737 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:00,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash -440324353, now seen corresponding path program 1 times [2024-11-07 11:27:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475503173] [2024-11-07 11:27:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475503173] [2024-11-07 11:27:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475503173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:00,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:27:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853855219] [2024-11-07 11:27:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:00,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:00,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:27:00,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:00,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 86 flow. 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 11:27:00,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:00,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:00,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:01,262 INFO L124 PetriNetUnfolderBase]: 711/1066 cut-off events. [2024-11-07 11:27:01,263 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-11-07 11:27:01,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2551 conditions, 1066 events. 711/1066 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3820 event pairs, 401 based on Foata normal form. 46/1102 useless extension candidates. Maximal degree in co-relation 926. Up to 571 conditions per place. [2024-11-07 11:27:01,274 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-11-07 11:27:01,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 77 transitions, 362 flow [2024-11-07 11:27:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:27:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:27:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-11-07 11:27:01,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2024-11-07 11:27:01,279 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 86 flow. Second operand 6 states and 94 transitions. [2024-11-07 11:27:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 77 transitions, 362 flow [2024-11-07 11:27:01,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 77 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:27:01,282 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 186 flow [2024-11-07 11:27:01,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2024-11-07 11:27:01,283 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-07 11:27:01,283 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 186 flow [2024-11-07 11:27:01,283 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 11:27:01,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:01,283 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:01,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:27:01,284 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:01,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1098836768, now seen corresponding path program 1 times [2024-11-07 11:27:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459389095] [2024-11-07 11:27:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:01,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459389095] [2024-11-07 11:27:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459389095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:01,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:01,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:27:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49960129] [2024-11-07 11:27:01,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:01,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:27:01,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:01,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 186 flow. 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 11:27:01,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:01,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:01,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:01,734 INFO L124 PetriNetUnfolderBase]: 619/947 cut-off events. [2024-11-07 11:27:01,734 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-11-07 11:27:01,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 947 events. 619/947 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3342 event pairs, 372 based on Foata normal form. 41/985 useless extension candidates. Maximal degree in co-relation 1459. Up to 571 conditions per place. [2024-11-07 11:27:01,748 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-11-07 11:27:01,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 424 flow [2024-11-07 11:27:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:27:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:27:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-07 11:27:01,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2024-11-07 11:27:01,756 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 186 flow. Second operand 6 states and 91 transitions. [2024-11-07 11:27:01,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 424 flow [2024-11-07 11:27:01,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:27:01,764 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 237 flow [2024-11-07 11:27:01,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2024-11-07 11:27:01,765 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-11-07 11:27:01,765 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 237 flow [2024-11-07 11:27:01,765 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 11:27:01,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:01,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:01,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:27:01,766 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:01,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash -688183846, now seen corresponding path program 1 times [2024-11-07 11:27:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:01,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530030176] [2024-11-07 11:27:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:01,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:01,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530030176] [2024-11-07 11:27:01,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530030176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:01,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:27:01,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118178039] [2024-11-07 11:27:01,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:01,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:27:01,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:01,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 237 flow. 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 11:27:01,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:01,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:01,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:02,225 INFO L124 PetriNetUnfolderBase]: 519/800 cut-off events. [2024-11-07 11:27:02,225 INFO L125 PetriNetUnfolderBase]: For 805/805 co-relation queries the response was YES. [2024-11-07 11:27:02,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 800 events. 519/800 cut-off events. For 805/805 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2661 event pairs, 333 based on Foata normal form. 22/819 useless extension candidates. Maximal degree in co-relation 1617. Up to 571 conditions per place. [2024-11-07 11:27:02,231 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 6 changer transitions 33/66 dead transitions. [2024-11-07 11:27:02,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 445 flow [2024-11-07 11:27:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:27:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:27:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-07 11:27:02,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-11-07 11:27:02,234 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 237 flow. Second operand 6 states and 87 transitions. [2024-11-07 11:27:02,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 445 flow [2024-11-07 11:27:02,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 11:27:02,238 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 154 flow [2024-11-07 11:27:02,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-07 11:27:02,240 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-11-07 11:27:02,240 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 154 flow [2024-11-07 11:27:02,240 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 11:27:02,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:02,241 INFO L204 CegarLoopForPetriNet]: 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] [2024-11-07 11:27:02,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:27:02,241 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:02,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1253641488, now seen corresponding path program 1 times [2024-11-07 11:27:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:02,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483560032] [2024-11-07 11:27:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:02,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483560032] [2024-11-07 11:27:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483560032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:02,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144646975] [2024-11-07 11:27:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:02,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:02,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:02,362 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 11:27:02,367 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 11:27:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:02,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:27:02,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:02,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144646975] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:02,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:27:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-07 11:27:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189551617] [2024-11-07 11:27:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:02,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:27:02,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:02,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:02,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:02,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:02,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:02,729 INFO L124 PetriNetUnfolderBase]: 377/554 cut-off events. [2024-11-07 11:27:02,729 INFO L125 PetriNetUnfolderBase]: For 549/549 co-relation queries the response was YES. [2024-11-07 11:27:02,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 554 events. 377/554 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1684 event pairs, 150 based on Foata normal form. 50/603 useless extension candidates. Maximal degree in co-relation 1686. Up to 385 conditions per place. [2024-11-07 11:27:02,734 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 40 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-11-07 11:27:02,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 298 flow [2024-11-07 11:27:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:27:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:27:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-07 11:27:02,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-11-07 11:27:02,735 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 154 flow. Second operand 5 states and 59 transitions. [2024-11-07 11:27:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 298 flow [2024-11-07 11:27:02,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 234 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-11-07 11:27:02,742 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 127 flow [2024-11-07 11:27:02,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-11-07 11:27:02,742 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-11-07 11:27:02,745 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 127 flow [2024-11-07 11:27:02,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:02,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:02,745 INFO L204 CegarLoopForPetriNet]: 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] [2024-11-07 11:27:02,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:27:02,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:02,946 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:02,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1836217093, now seen corresponding path program 1 times [2024-11-07 11:27:02,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:02,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892553277] [2024-11-07 11:27:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:02,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:03,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:03,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892553277] [2024-11-07 11:27:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892553277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:03,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218606529] [2024-11-07 11:27:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:03,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:03,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:03,053 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 11:27:03,054 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 11:27:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:03,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:27:03,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:03,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:03,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218606529] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:03,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:27:03,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-07 11:27:03,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000208492] [2024-11-07 11:27:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:03,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:03,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:27:03,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:03,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:03,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:03,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:03,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:03,341 INFO L124 PetriNetUnfolderBase]: 383/560 cut-off events. [2024-11-07 11:27:03,341 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-11-07 11:27:03,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 560 events. 383/560 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1675 event pairs, 164 based on Foata normal form. 42/599 useless extension candidates. Maximal degree in co-relation 1518. Up to 418 conditions per place. [2024-11-07 11:27:03,345 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 43 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-07 11:27:03,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 280 flow [2024-11-07 11:27:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:27:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:27:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-07 11:27:03,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-11-07 11:27:03,346 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 127 flow. Second operand 5 states and 60 transitions. [2024-11-07 11:27:03,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 280 flow [2024-11-07 11:27:03,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 262 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 11:27:03,347 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 137 flow [2024-11-07 11:27:03,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-07 11:27:03,348 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-07 11:27:03,348 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 137 flow [2024-11-07 11:27:03,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:03,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:03,348 INFO L204 CegarLoopForPetriNet]: 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] [2024-11-07 11:27:03,365 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 11:27:03,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:03,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:03,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2094722590, now seen corresponding path program 1 times [2024-11-07 11:27:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:03,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703915219] [2024-11-07 11:27:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:03,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:27:03,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703915219] [2024-11-07 11:27:03,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703915219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280602342] [2024-11-07 11:27:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:03,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:03,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:03,744 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 11:27:03,745 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 11:27:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:03,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:27:03,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:27:03,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:27:03,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280602342] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:03,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:27:03,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-07 11:27:03,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205986620] [2024-11-07 11:27:03,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:03,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:27:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:27:03,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:27:03,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:03,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 11:27:03,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:03,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:03,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:04,028 INFO L124 PetriNetUnfolderBase]: 432/630 cut-off events. [2024-11-07 11:27:04,028 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-11-07 11:27:04,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 630 events. 432/630 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1876 event pairs, 202 based on Foata normal form. 37/664 useless extension candidates. Maximal degree in co-relation 1848. Up to 502 conditions per place. [2024-11-07 11:27:04,032 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 43 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-07 11:27:04,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 296 flow [2024-11-07 11:27:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:27:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:27:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-07 11:27:04,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-11-07 11:27:04,033 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 137 flow. Second operand 5 states and 58 transitions. [2024-11-07 11:27:04,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 296 flow [2024-11-07 11:27:04,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 278 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-07 11:27:04,035 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 147 flow [2024-11-07 11:27:04,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-11-07 11:27:04,036 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-11-07 11:27:04,036 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 147 flow [2024-11-07 11:27:04,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 11:27:04,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:04,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:04,054 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 11:27:04,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:04,238 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:04,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:04,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1507050994, now seen corresponding path program 1 times [2024-11-07 11:27:04,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551440690] [2024-11-07 11:27:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:04,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:27:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:05,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551440690] [2024-11-07 11:27:05,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551440690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:05,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928975750] [2024-11-07 11:27:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:05,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:05,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:05,253 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 11:27:05,256 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 11:27:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:05,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-07 11:27:05,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:05,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 11:27:05,432 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 11:27:05,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 11:27:05,753 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2024-11-07 11:27:05,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2024-11-07 11:27:05,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-07 11:27:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:05,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:10,539 WARN L851 $PredicateComparison]: unable to prove that (forall ((~C~0.offset Int) (~B~0.offset Int)) (let ((.cse2 (* 4 |c_thread3Thread1of1ForFork0_~i~2#1|))) (let ((.cse0 (select (select |c_#memory_int#1| c_~B~0.base) (+ .cse2 ~B~0.offset))) (.cse1 (select (select |c_#memory_int#1| c_~A~0.base) (+ .cse2 c_~A~0.offset)))) (= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store |c_#memory_int#1| c_~C~0.base (store (select |c_#memory_int#1| c_~C~0.base) (+ .cse2 ~C~0.offset) (+ .cse0 .cse1))) c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) ~B~0.offset))))))) is different from false [2024-11-07 11:27:14,789 WARN L851 $PredicateComparison]: unable to prove that (forall ((~C~0.offset Int) (~B~0.offset Int)) (let ((.cse0 (select (select |c_#memory_int#1| c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select |c_#memory_int#1| c_~B~0.base) ~B~0.offset))) (= (+ c_~csum~0 .cse0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store |c_#memory_int#1| c_~C~0.base (store (select |c_#memory_int#1| c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) ~B~0.offset)))))) is different from false [2024-11-07 11:27:15,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:15,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 40 [2024-11-07 11:27:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2024-11-07 11:27:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928975750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:17,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 29 [2024-11-07 11:27:17,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909033442] [2024-11-07 11:27:17,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:17,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 11:27:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:17,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 11:27:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=658, Unknown=2, NotChecked=106, Total=870 [2024-11-07 11:27:17,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:17,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 147 flow. Second operand has 30 states, 30 states have (on average 6.2) internal successors, (186), 30 states have internal predecessors, (186), 0 states have call successors, (0), 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 11:27:17,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:17,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:17,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:28,101 INFO L124 PetriNetUnfolderBase]: 618/900 cut-off events. [2024-11-07 11:27:28,101 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2024-11-07 11:27:28,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 900 events. 618/900 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3036 event pairs, 27 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 2809. Up to 659 conditions per place. [2024-11-07 11:27:28,106 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 65 selfloop transitions, 30 changer transitions 1/97 dead transitions. [2024-11-07 11:27:28,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 97 transitions, 573 flow [2024-11-07 11:27:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:27:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:27:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-11-07 11:27:28,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2024-11-07 11:27:28,107 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 147 flow. Second operand 13 states and 146 transitions. [2024-11-07 11:27:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 97 transitions, 573 flow [2024-11-07 11:27:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 97 transitions, 546 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 11:27:28,109 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 328 flow [2024-11-07 11:27:28,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=328, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2024-11-07 11:27:28,110 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-11-07 11:27:28,110 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 328 flow [2024-11-07 11:27:28,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.2) internal successors, (186), 30 states have internal predecessors, (186), 0 states have call successors, (0), 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 11:27:28,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:28,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:28,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:28,314 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,SelfDestructingSolverStorable7 [2024-11-07 11:27:28,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:28,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 219702430, now seen corresponding path program 2 times [2024-11-07 11:27:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903163154] [2024-11-07 11:27:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:27:31,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903163154] [2024-11-07 11:27:31,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903163154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977307311] [2024-11-07 11:27:31,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:27:31,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:31,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:31,257 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 11:27:31,259 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 11:27:31,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:31,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:31,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 11:27:31,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:35,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:35,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-07 11:27:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:35,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:36,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:36,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 95 [2024-11-07 11:27:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977307311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:38,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:38,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 7] total 25 [2024-11-07 11:27:38,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144471348] [2024-11-07 11:27:38,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:38,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 11:27:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 11:27:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2024-11-07 11:27:38,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:38,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 328 flow. Second operand has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:38,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:38,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:38,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:46,319 INFO L124 PetriNetUnfolderBase]: 720/1047 cut-off events. [2024-11-07 11:27:46,319 INFO L125 PetriNetUnfolderBase]: For 1418/1418 co-relation queries the response was YES. [2024-11-07 11:27:46,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 1047 events. 720/1047 cut-off events. For 1418/1418 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3589 event pairs, 117 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 3874. Up to 894 conditions per place. [2024-11-07 11:27:46,325 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 69 selfloop transitions, 35 changer transitions 1/106 dead transitions. [2024-11-07 11:27:46,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 782 flow [2024-11-07 11:27:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 11:27:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 11:27:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-11-07 11:27:46,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33002481389578164 [2024-11-07 11:27:46,327 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 328 flow. Second operand 13 states and 133 transitions. [2024-11-07 11:27:46,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 782 flow [2024-11-07 11:27:46,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 721 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-07 11:27:46,330 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 550 flow [2024-11-07 11:27:46,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=550, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2024-11-07 11:27:46,331 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-11-07 11:27:46,331 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 550 flow [2024-11-07 11:27:46,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:46,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:46,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:46,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:46,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:46,535 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:46,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 385013276, now seen corresponding path program 3 times [2024-11-07 11:27:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920121206] [2024-11-07 11:27:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:48,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:48,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920121206] [2024-11-07 11:27:48,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920121206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:48,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470125873] [2024-11-07 11:27:48,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:27:48,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:48,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:48,437 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 11:27:48,438 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 11:27:48,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 11:27:48,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:48,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 11:27:48,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:52,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:52,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-07 11:27:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:52,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:53,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:53,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 87 [2024-11-07 11:27:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:55,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470125873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:55,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:55,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 23 [2024-11-07 11:27:55,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348346637] [2024-11-07 11:27:55,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:55,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 11:27:55,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:55,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 11:27:55,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-07 11:27:55,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:27:55,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 550 flow. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 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 11:27:55,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:55,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:27:55,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:28:02,001 INFO L124 PetriNetUnfolderBase]: 841/1221 cut-off events. [2024-11-07 11:28:02,001 INFO L125 PetriNetUnfolderBase]: For 2545/2545 co-relation queries the response was YES. [2024-11-07 11:28:02,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5057 conditions, 1221 events. 841/1221 cut-off events. For 2545/2545 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4330 event pairs, 144 based on Foata normal form. 1/1222 useless extension candidates. Maximal degree in co-relation 4998. Up to 1045 conditions per place. [2024-11-07 11:28:02,008 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 89 selfloop transitions, 40 changer transitions 1/131 dead transitions. [2024-11-07 11:28:02,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 131 transitions, 1087 flow [2024-11-07 11:28:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 11:28:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 11:28:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-11-07 11:28:02,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-11-07 11:28:02,010 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 550 flow. Second operand 10 states and 123 transitions. [2024-11-07 11:28:02,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 131 transitions, 1087 flow [2024-11-07 11:28:02,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 131 transitions, 1041 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-07 11:28:02,015 INFO L231 Difference]: Finished difference. Result has 78 places, 99 transitions, 813 flow [2024-11-07 11:28:02,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=813, PETRI_PLACES=78, PETRI_TRANSITIONS=99} [2024-11-07 11:28:02,015 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-11-07 11:28:02,015 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 99 transitions, 813 flow [2024-11-07 11:28:02,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 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 11:28:02,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:28:02,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:28:02,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 11:28:02,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-07 11:28:02,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:28:02,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:28:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1448156428, now seen corresponding path program 4 times [2024-11-07 11:28:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:28:02,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216853478] [2024-11-07 11:28:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:28:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:28:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:28:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:28:04,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:28:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216853478] [2024-11-07 11:28:04,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216853478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:28:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590910947] [2024-11-07 11:28:04,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:28:04,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:28:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:28:04,749 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 11:28:04,750 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 11:28:04,832 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:28:04,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:28:04,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 11:28:04,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:28:07,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:28:07,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-07 11:28:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:28:07,405 INFO L311 TraceCheckSpWp]: Computing backward predicates...