./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660'] 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:30:05,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:30:05,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:30:05,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:30:05,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:30:05,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:30:05,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:30:05,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:30:05,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:30:05,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:30:05,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:30:05,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:30:05,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:30:05,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:30:05,187 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:30:05,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:30:05,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:30:05,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:30:05,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:30:05,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:30:05,188 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:30:05,189 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:30:05,189 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:30:05,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:30:05,189 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:30:05,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:30:05,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:30:05,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:30:05,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:30:05,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:30:05,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:30:05,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:30:05,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:30:05,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:30:05,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:30:05,191 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-11-07 19:30:05,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:30:05,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:30:05,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:30:05,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:30:05,478 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:30:05,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-07 19:30:06,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:30:07,085 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:30:07,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-07 19:30:07,098 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4b89d9a03/e0313b1a5b394449867716dcb8a816a3/FLAG568544ae3 [2024-11-07 19:30:07,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4b89d9a03/e0313b1a5b394449867716dcb8a816a3 [2024-11-07 19:30:07,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:30:07,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:30:07,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:30:07,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:30:07,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:30:07,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7046786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07, skipping insertion in model container [2024-11-07 19:30:07,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:30:07,466 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:30:07,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:30:07,492 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:30:07,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:30:07,599 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:30:07,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07 WrapperNode [2024-11-07 19:30:07,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:30:07,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:30:07,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:30:07,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:30:07,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,691 INFO L138 Inliner]: procedures = 24, calls = 298, calls flagged for inlining = 70, calls inlined = 98, statements flattened = 1561 [2024-11-07 19:30:07,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:30:07,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:30:07,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:30:07,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:30:07,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,761 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-07 19:30:07,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:30:07,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:30:07,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:30:07,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:30:07,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (1/1) ... [2024-11-07 19:30:07,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:30:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:30:07,870 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 19:30:07,875 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 19:30:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:30:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:30:07,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:30:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:30:07,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:30:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:30:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:30:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:30:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:30:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 19:30:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 19:30:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 19:30:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:30:07,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:30:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:30:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:30:07,900 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 19:30:08,133 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:30:08,135 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:30:10,253 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:30:10,253 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:30:15,958 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:30:15,958 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-07 19:30:15,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:30:15 BoogieIcfgContainer [2024-11-07 19:30:15,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:30:15,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:30:15,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:30:16,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:30:16,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:30:07" (1/3) ... [2024-11-07 19:30:16,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9b05ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:30:16, skipping insertion in model container [2024-11-07 19:30:16,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:07" (2/3) ... [2024-11-07 19:30:16,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9b05ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:30:16, skipping insertion in model container [2024-11-07 19:30:16,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:30:15" (3/3) ... [2024-11-07 19:30:16,102 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-11-07 19:30:16,117 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:30:16,117 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 370 error locations. [2024-11-07 19:30:16,117 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:30:17,610 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:30:17,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 451 places, 472 transitions, 958 flow [2024-11-07 19:30:17,991 INFO L124 PetriNetUnfolderBase]: 28/470 cut-off events. [2024-11-07 19:30:17,993 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:30:18,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 470 events. 28/470 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 4149 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 423. Up to 7 conditions per place. [2024-11-07 19:30:18,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 451 places, 472 transitions, 958 flow [2024-11-07 19:30:18,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 469 transitions, 950 flow [2024-11-07 19:30:18,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:30:18,076 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=None, 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;@179134b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:30:18,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 724 error locations. [2024-11-07 19:30:18,083 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:30:18,084 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-07 19:30:18,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:30:18,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:30:18,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:30:18,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 721 more)] === [2024-11-07 19:30:18,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:30:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash 7599137, now seen corresponding path program 1 times [2024-11-07 19:30:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:30:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362082413] [2024-11-07 19:30:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:30:18,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:30:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:30:18,388 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 19:30:18,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:30:18,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362082413] [2024-11-07 19:30:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362082413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:30:18,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:30:18,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:30:18,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054113180] [2024-11-07 19:30:18,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:30:18,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:30:18,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:30:18,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:30:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:30:18,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 472 [2024-11-07 19:30:18,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 469 transitions, 950 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:30:18,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:30:18,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 472 [2024-11-07 19:30:18,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:30:30,092 INFO L124 PetriNetUnfolderBase]: 43994/71282 cut-off events. [2024-11-07 19:30:30,093 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2024-11-07 19:30:30,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142910 conditions, 71282 events. 43994/71282 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 4297. Compared 629547 event pairs, 40250 based on Foata normal form. 1/24575 useless extension candidates. Maximal degree in co-relation 142244. Up to 71250 conditions per place. [2024-11-07 19:30:30,459 INFO L140 encePairwiseOnDemand]: 289/472 looper letters, 276 selfloop transitions, 2 changer transitions 0/287 dead transitions. [2024-11-07 19:30:30,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 287 transitions, 1142 flow [2024-11-07 19:30:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:30:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:30:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2024-11-07 19:30:30,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3495762711864407 [2024-11-07 19:30:30,481 INFO L175 Difference]: Start difference. First operand has 448 places, 469 transitions, 950 flow. Second operand 3 states and 495 transitions. [2024-11-07 19:30:30,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 287 transitions, 1142 flow [2024-11-07 19:30:30,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 287 transitions, 1134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:30:30,501 INFO L231 Difference]: Finished difference. Result has 268 places, 287 transitions, 582 flow [2024-11-07 19:30:30,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=582, PETRI_PLACES=268, PETRI_TRANSITIONS=287} [2024-11-07 19:30:30,507 INFO L277 CegarLoopForPetriNet]: 448 programPoint places, -180 predicate places. [2024-11-07 19:30:30,509 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 287 transitions, 582 flow [2024-11-07 19:30:30,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 19:30:30,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:30:30,509 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:30:30,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:30:30,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 721 more)] === [2024-11-07 19:30:30,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:30:30,510 INFO L85 PathProgramCache]: Analyzing trace with hash 7599138, now seen corresponding path program 1 times [2024-11-07 19:30:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:30:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839636854] [2024-11-07 19:30:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:30:30,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:30:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:30:30,847 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 19:30:30,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:30:30,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839636854] [2024-11-07 19:30:30,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839636854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:30:30,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:30:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:30:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087838081] [2024-11-07 19:30:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:30:30,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:30:30,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:30:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:30:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:30:30,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 472 [2024-11-07 19:30:30,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 287 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:30:30,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:30:30,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 472 [2024-11-07 19:30:30,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:30:40,275 INFO L124 PetriNetUnfolderBase]: 43998/71294 cut-off events. [2024-11-07 19:30:40,275 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-07 19:30:40,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142710 conditions, 71294 events. 43998/71294 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 4297. Compared 629634 event pairs, 40250 based on Foata normal form. 0/24576 useless extension candidates. Maximal degree in co-relation 142614. Up to 71284 conditions per place. [2024-11-07 19:30:40,524 INFO L140 encePairwiseOnDemand]: 458/472 looper letters, 288 selfloop transitions, 10 changer transitions 0/299 dead transitions. [2024-11-07 19:30:40,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 299 transitions, 1204 flow [2024-11-07 19:30:40,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:30:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:30:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2024-11-07 19:30:40,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2387005649717514 [2024-11-07 19:30:40,527 INFO L175 Difference]: Start difference. First operand has 268 places, 287 transitions, 582 flow. Second operand 3 states and 338 transitions. [2024-11-07 19:30:40,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 299 transitions, 1204 flow [2024-11-07 19:30:40,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 299 transitions, 1198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:30:40,535 INFO L231 Difference]: Finished difference. Result has 270 places, 295 transitions, 658 flow [2024-11-07 19:30:40,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=270, PETRI_TRANSITIONS=295} [2024-11-07 19:30:40,536 INFO L277 CegarLoopForPetriNet]: 448 programPoint places, -178 predicate places. [2024-11-07 19:30:40,536 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 295 transitions, 658 flow [2024-11-07 19:30:40,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:30:40,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:30:40,536 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-07 19:30:40,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:30:40,537 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 721 more)] === [2024-11-07 19:30:40,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:30:40,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1286922213, now seen corresponding path program 1 times [2024-11-07 19:30:40,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:30:40,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090892827] [2024-11-07 19:30:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:30:40,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:30:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:30:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:30:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:30:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090892827] [2024-11-07 19:30:40,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090892827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:30:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667216673] [2024-11-07 19:30:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:30:40,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:30:40,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:30:40,848 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 19:30:40,851 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 19:30:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:30:42,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:30:42,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:30:42,139 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 19:30:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:30:42,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:30:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:30:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667216673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:30:42,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:30:42,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-07 19:30:42,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747406312] [2024-11-07 19:30:42,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:30:42,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 19:30:42,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:30:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 19:30:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-07 19:30:42,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 472 [2024-11-07 19:30:42,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 295 transitions, 658 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 19:30:42,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:30:42,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 472 [2024-11-07 19:30:42,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand