./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.08.cil-2.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/systemc/token_ring.08.cil-2.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', '19daebdfafed51668fa57cd9e9dbb1892c2070de71da48d425d8df389215d260'] 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/systemc/token_ring.08.cil-2.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 19daebdfafed51668fa57cd9e9dbb1892c2070de71da48d425d8df389215d260 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:58:04,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:58:04,743 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:58:04,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:58:04,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:58:04,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:58:04,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:58:04,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:58:04,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:58:04,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:58:04,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:58:04,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:58:04,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:58:04,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:58:04,776 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:58:04,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:58:04,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:58:04,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:58:04,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:58:04,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:58:04,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:58:04,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:58:04,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:58:04,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:58:04,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:58:04,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:58:04,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:58:04,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:58:04,779 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 -> 19daebdfafed51668fa57cd9e9dbb1892c2070de71da48d425d8df389215d260 [2024-11-06 23:58:05,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:58:05,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:58:05,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:58:05,019 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:58:05,019 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:58:05,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.08.cil-2.c [2024-11-06 23:58:06,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:58:06,372 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:58:06,376 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.08.cil-2.c [2024-11-06 23:58:06,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ef4ab9dc/b7094e11a813485f8b497e23d2e4d348/FLAG4b3103540 [2024-11-06 23:58:06,744 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ef4ab9dc/b7094e11a813485f8b497e23d2e4d348 [2024-11-06 23:58:06,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:58:06,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:58:06,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:58:06,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:58:06,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:58:06,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:58:06" (1/1) ... [2024-11-06 23:58:06,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bcd2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:06, skipping insertion in model container [2024-11-06 23:58:06,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:58:06" (1/1) ... [2024-11-06 23:58:06,774 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:58:06,885 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/systemc/token_ring.08.cil-2.c[671,684] [2024-11-06 23:58:06,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:58:06,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:58:06,956 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/systemc/token_ring.08.cil-2.c[671,684] [2024-11-06 23:58:06,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:58:07,016 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:58:07,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07 WrapperNode [2024-11-06 23:58:07,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:58:07,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:58:07,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:58:07,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:58:07,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,079 INFO L138 Inliner]: procedures = 44, calls = 56, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 645 [2024-11-06 23:58:07,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:58:07,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:58:07,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:58:07,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:58:07,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,111 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 23:58:07,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:58:07,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:58:07,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:58:07,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:58:07,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (1/1) ... [2024-11-06 23:58:07,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:58:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:58:07,165 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) [2024-11-06 23:58:07,168 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 [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-06 23:58:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:58:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:58:07,264 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:58:07,266 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:58:07,766 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-06 23:58:07,766 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:58:07,781 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:58:07,783 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-06 23:58:07,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:58:07 BoogieIcfgContainer [2024-11-06 23:58:07,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:58:07,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:58:07,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:58:07,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:58:07,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:58:06" (1/3) ... [2024-11-06 23:58:07,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eadd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:58:07, skipping insertion in model container [2024-11-06 23:58:07,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:58:07" (2/3) ... [2024-11-06 23:58:07,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eadd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:58:07, skipping insertion in model container [2024-11-06 23:58:07,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:58:07" (3/3) ... [2024-11-06 23:58:07,794 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-2.c [2024-11-06 23:58:07,803 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:58:07,803 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:58:07,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:58:07,861 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;@1d08058a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:58:07,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:58:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 266 states have (on average 1.631578947368421) internal successors, (434), 270 states have internal predecessors, (434), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 23:58:07,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:07,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:07,874 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:07,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:07,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash 898218100, now seen corresponding path program 1 times [2024-11-06 23:58:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409141046] [2024-11-06 23:58:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:08,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:08,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:08,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:08,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:08,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:08,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409141046] [2024-11-06 23:58:08,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409141046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:08,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:08,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:58:08,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122247945] [2024-11-06 23:58:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:08,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:58:08,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:08,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:58:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:58:08,339 INFO L87 Difference]: Start difference. First operand has 299 states, 266 states have (on average 1.631578947368421) internal successors, (434), 270 states have internal predecessors, (434), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:09,380 INFO L93 Difference]: Finished difference Result 684 states and 1116 transitions. [2024-11-06 23:58:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 23:58:09,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:09,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:09,390 INFO L225 Difference]: With dead ends: 684 [2024-11-06 23:58:09,390 INFO L226 Difference]: Without dead ends: 391 [2024-11-06 23:58:09,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-06 23:58:09,402 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 757 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:09,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 608 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 23:58:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-06 23:58:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 293. [2024-11-06 23:58:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 262 states have (on average 1.5458015267175573) internal successors, (405), 264 states have internal predecessors, (405), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-06 23:58:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 451 transitions. [2024-11-06 23:58:09,467 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 451 transitions. Word has length 134 [2024-11-06 23:58:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:09,471 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 451 transitions. [2024-11-06 23:58:09,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 451 transitions. [2024-11-06 23:58:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:09,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:09,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:09,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:58:09,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:09,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash 36384498, now seen corresponding path program 1 times [2024-11-06 23:58:09,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945217406] [2024-11-06 23:58:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:09,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:09,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:09,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:09,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:09,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:09,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:09,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945217406] [2024-11-06 23:58:09,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945217406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:09,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:09,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 23:58:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368157578] [2024-11-06 23:58:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:09,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 23:58:09,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:09,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 23:58:09,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:58:09,790 INFO L87 Difference]: Start difference. First operand 293 states and 451 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:11,353 INFO L93 Difference]: Finished difference Result 1053 states and 1660 transitions. [2024-11-06 23:58:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 23:58:11,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:11,361 INFO L225 Difference]: With dead ends: 1053 [2024-11-06 23:58:11,363 INFO L226 Difference]: Without dead ends: 776 [2024-11-06 23:58:11,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:58:11,364 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 1126 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:11,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1019 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 23:58:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-06 23:58:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 579. [2024-11-06 23:58:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 524 states have (on average 1.5572519083969465) internal successors, (816), 527 states have internal predecessors, (816), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2024-11-06 23:58:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 899 transitions. [2024-11-06 23:58:11,417 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 899 transitions. Word has length 134 [2024-11-06 23:58:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:11,418 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 899 transitions. [2024-11-06 23:58:11,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 899 transitions. [2024-11-06 23:58:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:11,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:11,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:11,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 23:58:11,422 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:11,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1325617938, now seen corresponding path program 1 times [2024-11-06 23:58:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603913117] [2024-11-06 23:58:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:11,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:11,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:11,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:11,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:11,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:11,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603913117] [2024-11-06 23:58:11,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603913117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:11,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:11,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:11,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179628257] [2024-11-06 23:58:11,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:11,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:11,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:11,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:11,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:11,718 INFO L87 Difference]: Start difference. First operand 579 states and 899 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:13,846 INFO L93 Difference]: Finished difference Result 1734 states and 2736 transitions. [2024-11-06 23:58:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:58:13,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:13,852 INFO L225 Difference]: With dead ends: 1734 [2024-11-06 23:58:13,852 INFO L226 Difference]: Without dead ends: 1171 [2024-11-06 23:58:13,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:58:13,854 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 1143 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:13,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1971 Invalid, 2603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 23:58:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-06 23:58:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 846. [2024-11-06 23:58:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 767 states have (on average 1.5501955671447196) internal successors, (1189), 771 states have internal predecessors, (1189), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2024-11-06 23:58:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1308 transitions. [2024-11-06 23:58:13,906 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1308 transitions. Word has length 134 [2024-11-06 23:58:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:13,906 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1308 transitions. [2024-11-06 23:58:13,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1308 transitions. [2024-11-06 23:58:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:13,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:13,908 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:13,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 23:58:13,908 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:13,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:13,908 INFO L85 PathProgramCache]: Analyzing trace with hash 603314288, now seen corresponding path program 1 times [2024-11-06 23:58:13,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10464397] [2024-11-06 23:58:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:13,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:14,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:14,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:14,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:14,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:14,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10464397] [2024-11-06 23:58:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10464397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:14,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782620853] [2024-11-06 23:58:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:14,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:14,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:14,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:14,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:14,117 INFO L87 Difference]: Start difference. First operand 846 states and 1308 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:16,037 INFO L93 Difference]: Finished difference Result 2738 states and 4311 transitions. [2024-11-06 23:58:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:58:16,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:16,045 INFO L225 Difference]: With dead ends: 2738 [2024-11-06 23:58:16,045 INFO L226 Difference]: Without dead ends: 1908 [2024-11-06 23:58:16,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:58:16,047 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 1225 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:16,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1261 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 23:58:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2024-11-06 23:58:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1381. [2024-11-06 23:58:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1254 states have (on average 1.543859649122807) internal successors, (1936), 1260 states have internal predecessors, (1936), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2024-11-06 23:58:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2131 transitions. [2024-11-06 23:58:16,127 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2131 transitions. Word has length 134 [2024-11-06 23:58:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:16,127 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 2131 transitions. [2024-11-06 23:58:16,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2131 transitions. [2024-11-06 23:58:16,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:16,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:16,129 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:16,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 23:58:16,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:16,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1689766738, now seen corresponding path program 1 times [2024-11-06 23:58:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:16,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655311627] [2024-11-06 23:58:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:16,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:16,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:16,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:16,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:16,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:16,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655311627] [2024-11-06 23:58:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655311627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:16,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951327201] [2024-11-06 23:58:16,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:16,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:16,307 INFO L87 Difference]: Start difference. First operand 1381 states and 2131 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:18,482 INFO L93 Difference]: Finished difference Result 4673 states and 7330 transitions. [2024-11-06 23:58:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:58:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:18,494 INFO L225 Difference]: With dead ends: 4673 [2024-11-06 23:58:18,494 INFO L226 Difference]: Without dead ends: 3308 [2024-11-06 23:58:18,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:58:18,498 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 1135 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:18,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1969 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 23:58:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2024-11-06 23:58:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 2452. [2024-11-06 23:58:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2229 states have (on average 1.5388066397487663) internal successors, (3430), 2239 states have internal predecessors, (3430), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2024-11-06 23:58:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3783 transitions. [2024-11-06 23:58:18,618 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3783 transitions. Word has length 134 [2024-11-06 23:58:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:18,618 INFO L471 AbstractCegarLoop]: Abstraction has 2452 states and 3783 transitions. [2024-11-06 23:58:18,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3783 transitions. [2024-11-06 23:58:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:18,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:18,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:18,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 23:58:18,623 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:18,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 37378224, now seen corresponding path program 1 times [2024-11-06 23:58:18,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:18,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737262770] [2024-11-06 23:58:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:18,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:18,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:18,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:18,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:18,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:18,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:18,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:18,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737262770] [2024-11-06 23:58:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737262770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:18,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:18,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:18,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287451082] [2024-11-06 23:58:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:18,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:18,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:18,800 INFO L87 Difference]: Start difference. First operand 2452 states and 3783 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:21,046 INFO L93 Difference]: Finished difference Result 8542 states and 13384 transitions. [2024-11-06 23:58:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:58:21,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:21,077 INFO L225 Difference]: With dead ends: 8542 [2024-11-06 23:58:21,078 INFO L226 Difference]: Without dead ends: 6106 [2024-11-06 23:58:21,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:58:21,084 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 1131 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:21,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 1969 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 23:58:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2024-11-06 23:58:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 4599. [2024-11-06 23:58:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4184 states have (on average 1.5353728489483747) internal successors, (6424), 4202 states have internal predecessors, (6424), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2024-11-06 23:58:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 7111 transitions. [2024-11-06 23:58:21,275 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 7111 transitions. Word has length 134 [2024-11-06 23:58:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:21,275 INFO L471 AbstractCegarLoop]: Abstraction has 4599 states and 7111 transitions. [2024-11-06 23:58:21,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 7111 transitions. [2024-11-06 23:58:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:21,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:21,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:21,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 23:58:21,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:21,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash 508734574, now seen corresponding path program 1 times [2024-11-06 23:58:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:21,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851653952] [2024-11-06 23:58:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:21,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:21,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:21,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:21,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:21,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851653952] [2024-11-06 23:58:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851653952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:21,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:21,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189480300] [2024-11-06 23:58:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:21,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:21,446 INFO L87 Difference]: Start difference. First operand 4599 states and 7111 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:23,773 INFO L93 Difference]: Finished difference Result 16279 states and 25550 transitions. [2024-11-06 23:58:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:58:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:23,813 INFO L225 Difference]: With dead ends: 16279 [2024-11-06 23:58:23,813 INFO L226 Difference]: Without dead ends: 11696 [2024-11-06 23:58:23,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:58:23,826 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 1127 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:23,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1969 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 23:58:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11696 states. [2024-11-06 23:58:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11696 to 8906. [2024-11-06 23:58:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8906 states, 8107 states have (on average 1.5332428765264585) internal successors, (12430), 8141 states have internal predecessors, (12430), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2024-11-06 23:58:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8906 states to 8906 states and 13839 transitions. [2024-11-06 23:58:24,241 INFO L78 Accepts]: Start accepts. Automaton has 8906 states and 13839 transitions. Word has length 134 [2024-11-06 23:58:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:24,243 INFO L471 AbstractCegarLoop]: Abstraction has 8906 states and 13839 transitions. [2024-11-06 23:58:24,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 8906 states and 13839 transitions. [2024-11-06 23:58:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:24,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:24,251 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:24,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 23:58:24,251 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:24,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1138628368, now seen corresponding path program 1 times [2024-11-06 23:58:24,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:24,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794444951] [2024-11-06 23:58:24,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:24,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:24,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:24,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:24,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:24,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:24,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:24,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:24,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794444951] [2024-11-06 23:58:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794444951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:24,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617851640] [2024-11-06 23:58:24,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:24,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:24,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:24,448 INFO L87 Difference]: Start difference. First operand 8906 states and 13839 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:27,025 INFO L93 Difference]: Finished difference Result 31752 states and 50072 transitions. [2024-11-06 23:58:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:58:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:27,089 INFO L225 Difference]: With dead ends: 31752 [2024-11-06 23:58:27,090 INFO L226 Difference]: Without dead ends: 22862 [2024-11-06 23:58:27,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:58:27,111 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 1129 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:27,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1969 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 23:58:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22862 states. [2024-11-06 23:58:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22862 to 17549. [2024-11-06 23:58:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17549 states, 15982 states have (on average 1.5319734701539232) internal successors, (24484), 16048 states have internal predecessors, (24484), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2024-11-06 23:58:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17549 states to 17549 states and 27499 transitions. [2024-11-06 23:58:28,052 INFO L78 Accepts]: Start accepts. Automaton has 17549 states and 27499 transitions. Word has length 134 [2024-11-06 23:58:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:28,053 INFO L471 AbstractCegarLoop]: Abstraction has 17549 states and 27499 transitions. [2024-11-06 23:58:28,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 17549 states and 27499 transitions. [2024-11-06 23:58:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:28,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:28,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:28,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 23:58:28,063 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:28,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1024988206, now seen corresponding path program 1 times [2024-11-06 23:58:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334059489] [2024-11-06 23:58:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:28,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:28,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:28,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:28,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:28,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334059489] [2024-11-06 23:58:28,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334059489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:28,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:28,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023760776] [2024-11-06 23:58:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:28,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:28,221 INFO L87 Difference]: Start difference. First operand 17549 states and 27499 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:31,878 INFO L93 Difference]: Finished difference Result 62634 states and 99590 transitions. [2024-11-06 23:58:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:58:31,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:32,041 INFO L225 Difference]: With dead ends: 62634 [2024-11-06 23:58:32,041 INFO L226 Difference]: Without dead ends: 45101 [2024-11-06 23:58:32,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:58:32,097 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 1125 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:32,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 1969 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 23:58:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45101 states. [2024-11-06 23:58:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45101 to 34961. [2024-11-06 23:58:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34961 states, 31858 states have (on average 1.5321740222236173) internal successors, (48812), 31988 states have internal predecessors, (48812), 2200 states have call successors, (2200), 775 states have call predecessors, (2200), 902 states have return successors, (4513), 2325 states have call predecessors, (4513), 2198 states have call successors, (4513) [2024-11-06 23:58:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34961 states to 34961 states and 55525 transitions. [2024-11-06 23:58:33,637 INFO L78 Accepts]: Start accepts. Automaton has 34961 states and 55525 transitions. Word has length 134 [2024-11-06 23:58:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:33,637 INFO L471 AbstractCegarLoop]: Abstraction has 34961 states and 55525 transitions. [2024-11-06 23:58:33,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 34961 states and 55525 transitions. [2024-11-06 23:58:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:33,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:33,653 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:33,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 23:58:33,654 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:33,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash -948177172, now seen corresponding path program 1 times [2024-11-06 23:58:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197748766] [2024-11-06 23:58:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:33,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:33,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:33,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:33,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:33,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:33,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:33,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197748766] [2024-11-06 23:58:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197748766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:33,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:33,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288823435] [2024-11-06 23:58:33,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:33,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:33,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:33,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:33,802 INFO L87 Difference]: Start difference. First operand 34961 states and 55525 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:39,610 INFO L93 Difference]: Finished difference Result 140016 states and 224284 transitions. [2024-11-06 23:58:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 23:58:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:40,214 INFO L225 Difference]: With dead ends: 140016 [2024-11-06 23:58:40,215 INFO L226 Difference]: Without dead ends: 105071 [2024-11-06 23:58:40,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-06 23:58:40,310 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 1454 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:40,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1959 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 23:58:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105071 states. [2024-11-06 23:58:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105071 to 69526. [2024-11-06 23:58:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69526 states, 63479 states have (on average 1.5343341892594402) internal successors, (97398), 63737 states have internal predecessors, (97398), 4248 states have call successors, (4248), 1543 states have call predecessors, (4248), 1798 states have return successors, (11063), 4501 states have call predecessors, (11063), 4246 states have call successors, (11063) [2024-11-06 23:58:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69526 states to 69526 states and 112709 transitions. [2024-11-06 23:58:43,364 INFO L78 Accepts]: Start accepts. Automaton has 69526 states and 112709 transitions. Word has length 134 [2024-11-06 23:58:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:58:43,364 INFO L471 AbstractCegarLoop]: Abstraction has 69526 states and 112709 transitions. [2024-11-06 23:58:43,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 69526 states and 112709 transitions. [2024-11-06 23:58:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 23:58:43,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:58:43,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:58:43,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 23:58:43,395 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:58:43,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:58:43,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1204929646, now seen corresponding path program 1 times [2024-11-06 23:58:43,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:58:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376130277] [2024-11-06 23:58:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:58:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:58:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:43,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:58:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:43,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 23:58:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:43,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:58:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:43,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-06 23:58:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:43,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-06 23:58:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:58:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:58:43,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:58:43,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376130277] [2024-11-06 23:58:43,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376130277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:58:43,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:58:43,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:58:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738201506] [2024-11-06 23:58:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:58:43,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:58:43,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:58:43,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:58:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:58:43,569 INFO L87 Difference]: Start difference. First operand 69526 states and 112709 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:58:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:58:52,991 INFO L93 Difference]: Finished difference Result 275067 states and 449354 transitions. [2024-11-06 23:58:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 23:58:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2024-11-06 23:58:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:58:53,723 INFO L225 Difference]: With dead ends: 275067 [2024-11-06 23:58:53,724 INFO L226 Difference]: Without dead ends: 205557 [2024-11-06 23:58:53,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-06 23:58:53,936 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 1274 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:58:53,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 1307 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 23:58:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205557 states.