./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_5_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_5_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b45498278a8f542f4cd5ce4d94ff4dff71bddcb389dc6b12ae7628aeefb5935 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:14:00,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:14:00,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:14:00,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:14:00,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:14:00,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:14:00,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:14:00,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:14:00,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:14:00,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:14:00,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:14:00,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:14:00,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:14:00,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:14:00,887 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:14:00,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:14:00,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:14:00,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:14:00,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:14:00,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:14:00,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:14:00,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:14:00,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:14:00,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:14:00,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:14:00,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:14:00,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:14:00,891 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:14:00,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:14:00,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:14:00,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:14:00,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:14:00,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:14:00,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:14:00,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:14:00,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:14:00,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:14:00,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:14:00,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:14:00,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:14:00,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:14:00,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:14:00,895 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b45498278a8f542f4cd5ce4d94ff4dff71bddcb389dc6b12ae7628aeefb5935 [2024-10-12 18:14:01,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:14:01,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:14:01,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:14:01,207 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:14:01,207 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:14:01,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_5_safe.c-amalgamation.i [2024-10-12 18:14:02,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:14:03,093 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:14:03,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_5_safe.c-amalgamation.i [2024-10-12 18:14:03,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb84a483/fc01c40dc4964b3187881b636d3773b5/FLAG58c1fecd0 [2024-10-12 18:14:03,312 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb84a483/fc01c40dc4964b3187881b636d3773b5 [2024-10-12 18:14:03,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:14:03,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:14:03,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:14:03,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:14:03,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:14:03,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:14:03" (1/1) ... [2024-10-12 18:14:03,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b9a644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:03, skipping insertion in model container [2024-10-12 18:14:03,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:14:03" (1/1) ... [2024-10-12 18:14:03,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:14:04,184 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_5_safe.c-amalgamation.i[63639,63652] [2024-10-12 18:14:04,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:14:04,430 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:14:04,479 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_5_safe.c-amalgamation.i[63639,63652] [2024-10-12 18:14:04,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:14:04,737 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:14:04,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04 WrapperNode [2024-10-12 18:14:04,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:14:04,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:14:04,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:14:04,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:14:04,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:04,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:04,927 INFO L138 Inliner]: procedures = 619, calls = 1412, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1680 [2024-10-12 18:14:04,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:14:04,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:14:04,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:14:04,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:14:04,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:04,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:04,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,025 INFO L175 MemorySlicer]: Split 1388 memory accesses to 12 slices as follows [2, 6, 7, 10, 97, 33, 1025, 33, 97, 4, 38, 36]. 74 percent of accesses are in the largest equivalence class. The 1356 initializations are split as follows [2, 0, 7, 0, 96, 32, 1024, 32, 96, 3, 32, 32]. The 8 writes are split as follows [0, 1, 0, 3, 0, 0, 0, 0, 0, 0, 2, 2]. [2024-10-12 18:14:05,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:14:05,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:14:05,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:14:05,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:14:05,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (1/1) ... [2024-10-12 18:14:05,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:14:05,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:05,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 18:14:05,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 18:14:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-12 18:14:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-12 18:14:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-12 18:14:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-12 18:14:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-12 18:14:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-12 18:14:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-12 18:14:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-12 18:14:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-12 18:14:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-12 18:14:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-12 18:14:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-12 18:14:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 18:14:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-12 18:14:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-12 18:14:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-12 18:14:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-12 18:14:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-12 18:14:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-12 18:14:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-12 18:14:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-12 18:14:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-12 18:14:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-12 18:14:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:14:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:14:05,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:14:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 18:14:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 18:14:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 18:14:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 18:14:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 18:14:05,406 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:14:05,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:14:06,866 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-10-12 18:14:06,866 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:14:06,998 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:14:06,998 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-12 18:14:06,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:14:06 BoogieIcfgContainer [2024-10-12 18:14:06,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:14:07,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:14:07,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:14:07,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:14:07,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:14:03" (1/3) ... [2024-10-12 18:14:07,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20850f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:14:07, skipping insertion in model container [2024-10-12 18:14:07,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:14:04" (2/3) ... [2024-10-12 18:14:07,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20850f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:14:07, skipping insertion in model container [2024-10-12 18:14:07,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:14:06" (3/3) ... [2024-10-12 18:14:07,009 INFO L112 eAbstractionObserver]: Analyzing ICFG vdp_5_safe.c-amalgamation.i [2024-10-12 18:14:07,027 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:14:07,028 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:14:07,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:14:07,105 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;@490af566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:14:07,105 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:14:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:07,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:07,119 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] [2024-10-12 18:14:07,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:07,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2012850619, now seen corresponding path program 1 times [2024-10-12 18:14:07,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:07,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636286056] [2024-10-12 18:14:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:07,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:07,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:07,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636286056] [2024-10-12 18:14:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636286056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:07,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:07,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:14:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110751661] [2024-10-12 18:14:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:07,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:14:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:14:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:14:07,735 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:07,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:07,875 INFO L93 Difference]: Finished difference Result 93 states and 159 transitions. [2024-10-12 18:14:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:14:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-12 18:14:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:07,887 INFO L225 Difference]: With dead ends: 93 [2024-10-12 18:14:07,887 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:14:07,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:14:07,895 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:07,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:14:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-12 18:14:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2024-10-12 18:14:07,937 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 29 [2024-10-12 18:14:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:07,939 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2024-10-12 18:14:07,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:07,940 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2024-10-12 18:14:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:07,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:07,941 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] [2024-10-12 18:14:07,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:14:07,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:07,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2047546805, now seen corresponding path program 1 times [2024-10-12 18:14:07,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:07,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490783338] [2024-10-12 18:14:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:07,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:08,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:08,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490783338] [2024-10-12 18:14:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490783338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:08,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:08,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:14:08,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954100583] [2024-10-12 18:14:08,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:08,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:08,249 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:08,392 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2024-10-12 18:14:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:08,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-12 18:14:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:08,394 INFO L225 Difference]: With dead ends: 84 [2024-10-12 18:14:08,394 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:14:08,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:08,396 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:08,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:14:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-12 18:14:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2024-10-12 18:14:08,403 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 29 [2024-10-12 18:14:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:08,403 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2024-10-12 18:14:08,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2024-10-12 18:14:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:08,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:08,405 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] [2024-10-12 18:14:08,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:14:08,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:08,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2028565773, now seen corresponding path program 1 times [2024-10-12 18:14:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390662550] [2024-10-12 18:14:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:08,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390662550] [2024-10-12 18:14:08,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390662550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:08,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:08,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 18:14:08,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973024262] [2024-10-12 18:14:08,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:08,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:08,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:14:08,745 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:08,907 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2024-10-12 18:14:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:08,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-12 18:14:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:08,910 INFO L225 Difference]: With dead ends: 52 [2024-10-12 18:14:08,910 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:14:08,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:14:08,911 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:08,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 129 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:14:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:14:08,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-12 18:14:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-12 18:14:08,930 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 29 [2024-10-12 18:14:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:08,931 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-12 18:14:08,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-12 18:14:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:14:08,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:08,932 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] [2024-10-12 18:14:08,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:14:08,932 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:08,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2026718731, now seen corresponding path program 1 times [2024-10-12 18:14:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:08,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994219588] [2024-10-12 18:14:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:09,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:09,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994219588] [2024-10-12 18:14:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994219588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:09,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:14:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:14:09,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213902365] [2024-10-12 18:14:09,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:09,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:09,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:09,355 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:09,490 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2024-10-12 18:14:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-12 18:14:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:09,492 INFO L225 Difference]: With dead ends: 76 [2024-10-12 18:14:09,493 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 18:14:09,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:14:09,495 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:09,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 18:14:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-10-12 18:14:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-12 18:14:09,504 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 29 [2024-10-12 18:14:09,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:09,504 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-12 18:14:09,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-12 18:14:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 18:14:09,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:09,506 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] [2024-10-12 18:14:09,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 18:14:09,506 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:09,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2060179138, now seen corresponding path program 1 times [2024-10-12 18:14:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:09,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560204071] [2024-10-12 18:14:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:09,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:09,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560204071] [2024-10-12 18:14:09,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560204071] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:09,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205138748] [2024-10-12 18:14:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:09,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:09,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:09,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:09,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:14:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:10,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:14:10,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:14:10,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:14:10,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205138748] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:10,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:10,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 18:14:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135004278] [2024-10-12 18:14:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:10,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:14:10,589 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:10,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:10,703 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2024-10-12 18:14:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:10,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-12 18:14:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:10,705 INFO L225 Difference]: With dead ends: 65 [2024-10-12 18:14:10,705 INFO L226 Difference]: Without dead ends: 48 [2024-10-12 18:14:10,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:14:10,706 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:10,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-12 18:14:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-12 18:14:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-12 18:14:10,713 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2024-10-12 18:14:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:10,713 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-12 18:14:10,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-12 18:14:10,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 18:14:10,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:10,715 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] [2024-10-12 18:14:10,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:14:10,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:10,916 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:10,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1389601723, now seen corresponding path program 1 times [2024-10-12 18:14:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:10,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505151075] [2024-10-12 18:14:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:10,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:14:11,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:11,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505151075] [2024-10-12 18:14:11,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505151075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:11,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159316300] [2024-10-12 18:14:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:11,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:11,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:11,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:11,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:14:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:11,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:14:11,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:14:11,819 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:14:11,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159316300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:11,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:14:11,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 18:14:11,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531907137] [2024-10-12 18:14:11,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:11,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:11,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:14:11,821 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:11,928 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-12 18:14:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-12 18:14:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:11,931 INFO L225 Difference]: With dead ends: 86 [2024-10-12 18:14:11,933 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 18:14:11,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:14:11,934 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:11,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 18:14:11,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-10-12 18:14:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-12 18:14:11,940 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 35 [2024-10-12 18:14:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:11,940 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-12 18:14:11,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-12 18:14:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:14:11,944 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:11,944 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:11,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:12,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-12 18:14:12,145 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:12,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:12,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1232765958, now seen corresponding path program 1 times [2024-10-12 18:14:12,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:12,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118915318] [2024-10-12 18:14:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:12,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:14:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118915318] [2024-10-12 18:14:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118915318] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017729085] [2024-10-12 18:14:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:12,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:12,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:12,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:12,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:14:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:13,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:14:13,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:14:13,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:13,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017729085] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:13,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:13,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:14:13,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975593582] [2024-10-12 18:14:13,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:13,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:13,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:13,062 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:13,171 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-12 18:14:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:13,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-12 18:14:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:13,173 INFO L225 Difference]: With dead ends: 72 [2024-10-12 18:14:13,173 INFO L226 Difference]: Without dead ends: 50 [2024-10-12 18:14:13,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:13,174 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:13,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:13,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-12 18:14:13,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-12 18:14:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-12 18:14:13,181 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 38 [2024-10-12 18:14:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:13,181 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-12 18:14:13,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-12 18:14:13,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-12 18:14:13,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:13,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:13,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:13,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:13,388 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:13,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 112245872, now seen corresponding path program 1 times [2024-10-12 18:14:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068367167] [2024-10-12 18:14:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:13,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:13,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068367167] [2024-10-12 18:14:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068367167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207426620] [2024-10-12 18:14:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:13,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:13,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:13,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:13,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:14:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:14,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:14:14,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:14:14,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207426620] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:14,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:14,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 18:14:14,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688186496] [2024-10-12 18:14:14,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:14,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:14:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:14,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:14:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:14,286 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:14,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:14,384 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2024-10-12 18:14:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:14:14,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-12 18:14:14,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:14,385 INFO L225 Difference]: With dead ends: 62 [2024-10-12 18:14:14,385 INFO L226 Difference]: Without dead ends: 51 [2024-10-12 18:14:14,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:14,386 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:14,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-12 18:14:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-12 18:14:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-12 18:14:14,391 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-10-12 18:14:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:14,391 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-12 18:14:14,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-12 18:14:14,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-12 18:14:14,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:14,392 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] [2024-10-12 18:14:14,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:14:14,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:14,593 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:14,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1541916076, now seen corresponding path program 1 times [2024-10-12 18:14:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:14,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886679122] [2024-10-12 18:14:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:14,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:14,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886679122] [2024-10-12 18:14:14,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886679122] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:14,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104382287] [2024-10-12 18:14:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:14,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:14,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:14,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:14:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:15,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:14:15,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:15,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:15,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104382287] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:15,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-12 18:14:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266817961] [2024-10-12 18:14:15,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:15,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 18:14:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:15,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 18:14:15,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:14:15,525 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:15,659 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-10-12 18:14:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:14:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-12 18:14:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:15,660 INFO L225 Difference]: With dead ends: 90 [2024-10-12 18:14:15,660 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 18:14:15,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:14:15,661 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:15,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 18:14:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-12 18:14:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-12 18:14:15,668 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 44 [2024-10-12 18:14:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:15,668 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-12 18:14:15,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-12 18:14:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 18:14:15,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:15,669 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:15,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 18:14:15,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:15,870 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:15,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1917566771, now seen corresponding path program 2 times [2024-10-12 18:14:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688906059] [2024-10-12 18:14:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:14:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688906059] [2024-10-12 18:14:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688906059] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038321761] [2024-10-12 18:14:16,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:14:16,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:16,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:16,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:16,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:14:16,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:14:16,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:16,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:16,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 18:14:16,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 18:14:16,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038321761] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:16,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:16,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-12 18:14:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190814554] [2024-10-12 18:14:16,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:16,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:14:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:14:16,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:14:16,865 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:17,120 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2024-10-12 18:14:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:14:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-12 18:14:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:17,121 INFO L225 Difference]: With dead ends: 104 [2024-10-12 18:14:17,122 INFO L226 Difference]: Without dead ends: 74 [2024-10-12 18:14:17,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:14:17,123 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:17,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 345 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:14:17,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-12 18:14:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-10-12 18:14:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-10-12 18:14:17,137 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 53 [2024-10-12 18:14:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:17,137 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-10-12 18:14:17,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-10-12 18:14:17,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 18:14:17,138 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:17,139 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:17,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:14:17,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:17,340 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:17,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:17,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1485773431, now seen corresponding path program 3 times [2024-10-12 18:14:17,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:17,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480484746] [2024-10-12 18:14:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:17,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 18:14:17,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:17,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480484746] [2024-10-12 18:14:17,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480484746] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:17,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286724094] [2024-10-12 18:14:17,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:14:17,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:17,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:17,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:17,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:14:18,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:14:18,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:18,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:14:18,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-12 18:14:18,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:14:18,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286724094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:18,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:14:18,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 18:14:18,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056457548] [2024-10-12 18:14:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:18,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:18,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:18,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:18,411 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:18,498 INFO L93 Difference]: Finished difference Result 112 states and 149 transitions. [2024-10-12 18:14:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 18:14:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:18,501 INFO L225 Difference]: With dead ends: 112 [2024-10-12 18:14:18,502 INFO L226 Difference]: Without dead ends: 75 [2024-10-12 18:14:18,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:18,502 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:18,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-12 18:14:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-10-12 18:14:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-12 18:14:18,513 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2024-10-12 18:14:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:18,515 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-12 18:14:18,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-12 18:14:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-12 18:14:18,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:18,516 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:18,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:18,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:18,717 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:18,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1071268102, now seen corresponding path program 1 times [2024-10-12 18:14:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:18,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291276233] [2024-10-12 18:14:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 18:14:19,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291276233] [2024-10-12 18:14:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291276233] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213440988] [2024-10-12 18:14:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:19,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:19,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:19,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:19,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:14:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:19,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:19,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-12 18:14:19,777 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:14:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213440988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:19,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:14:19,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 18:14:19,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219101181] [2024-10-12 18:14:19,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:19,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:19,778 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:19,870 INFO L93 Difference]: Finished difference Result 138 states and 184 transitions. [2024-10-12 18:14:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:19,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-12 18:14:19,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:19,871 INFO L225 Difference]: With dead ends: 138 [2024-10-12 18:14:19,871 INFO L226 Difference]: Without dead ends: 76 [2024-10-12 18:14:19,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:14:19,872 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:19,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:19,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-12 18:14:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-10-12 18:14:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 73 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2024-10-12 18:14:19,878 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 68 [2024-10-12 18:14:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:19,878 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2024-10-12 18:14:19,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2024-10-12 18:14:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 18:14:19,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:19,879 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:19,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 18:14:20,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 18:14:20,080 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:20,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:20,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2013383270, now seen corresponding path program 1 times [2024-10-12 18:14:20,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:20,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187932863] [2024-10-12 18:14:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:14:20,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187932863] [2024-10-12 18:14:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187932863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873109922] [2024-10-12 18:14:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:20,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:20,650 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:20,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:14:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:21,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:21,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-12 18:14:21,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-12 18:14:21,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873109922] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:21,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2024-10-12 18:14:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4388939] [2024-10-12 18:14:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:21,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:21,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:14:21,226 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:21,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:21,330 INFO L93 Difference]: Finished difference Result 113 states and 149 transitions. [2024-10-12 18:14:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:21,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-12 18:14:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:21,331 INFO L225 Difference]: With dead ends: 113 [2024-10-12 18:14:21,331 INFO L226 Difference]: Without dead ends: 75 [2024-10-12 18:14:21,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:14:21,332 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:21,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-12 18:14:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-12 18:14:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2024-10-12 18:14:21,339 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 71 [2024-10-12 18:14:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:21,340 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2024-10-12 18:14:21,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2024-10-12 18:14:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 18:14:21,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:21,342 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:21,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 18:14:21,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 18:14:21,543 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:21,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1979207413, now seen corresponding path program 1 times [2024-10-12 18:14:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:21,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866206372] [2024-10-12 18:14:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:21,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:14:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866206372] [2024-10-12 18:14:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866206372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025138097] [2024-10-12 18:14:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:22,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:22,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:22,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 18:14:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:22,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 18:14:22,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:14:22,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-12 18:14:22,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025138097] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:22,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:22,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-12 18:14:22,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805951169] [2024-10-12 18:14:22,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:22,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 18:14:22,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 18:14:22,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-12 18:14:22,735 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:23,155 INFO L93 Difference]: Finished difference Result 139 states and 189 transitions. [2024-10-12 18:14:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 18:14:23,156 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-12 18:14:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:23,157 INFO L225 Difference]: With dead ends: 139 [2024-10-12 18:14:23,157 INFO L226 Difference]: Without dead ends: 98 [2024-10-12 18:14:23,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:14:23,158 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 54 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:23,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 395 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:14:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-12 18:14:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-10-12 18:14:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.3263157894736841) internal successors, (126), 95 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2024-10-12 18:14:23,169 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 72 [2024-10-12 18:14:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:23,169 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2024-10-12 18:14:23,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2024-10-12 18:14:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 18:14:23,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:23,172 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:23,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 18:14:23,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 18:14:23,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:23,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:23,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1615231964, now seen corresponding path program 2 times [2024-10-12 18:14:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135160077] [2024-10-12 18:14:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-12 18:14:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135160077] [2024-10-12 18:14:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135160077] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747165123] [2024-10-12 18:14:24,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:14:24,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:24,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:24,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:24,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 18:14:24,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:14:24,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:24,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 18:14:24,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-12 18:14:24,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 18:14:24,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747165123] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:24,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:24,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-12 18:14:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614874354] [2024-10-12 18:14:24,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:24,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 18:14:24,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 18:14:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:14:24,906 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:25,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:25,687 INFO L93 Difference]: Finished difference Result 179 states and 243 transitions. [2024-10-12 18:14:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 18:14:25,688 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-12 18:14:25,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:25,688 INFO L225 Difference]: With dead ends: 179 [2024-10-12 18:14:25,688 INFO L226 Difference]: Without dead ends: 120 [2024-10-12 18:14:25,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-12 18:14:25,690 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 80 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:25,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 748 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:14:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-12 18:14:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-10-12 18:14:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 119 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2024-10-12 18:14:25,703 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 93 [2024-10-12 18:14:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:25,703 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2024-10-12 18:14:25,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2024-10-12 18:14:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-12 18:14:25,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:25,704 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:25,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 18:14:25,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 18:14:25,905 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:25,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 880468316, now seen corresponding path program 3 times [2024-10-12 18:14:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492973816] [2024-10-12 18:14:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-12 18:14:27,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:27,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492973816] [2024-10-12 18:14:27,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492973816] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:27,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816278674] [2024-10-12 18:14:27,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:14:27,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:27,023 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:27,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 18:14:27,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:14:27,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:27,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 18:14:27,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-10-12 18:14:27,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-12 18:14:27,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816278674] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:27,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:27,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 5] total 22 [2024-10-12 18:14:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346507099] [2024-10-12 18:14:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:27,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:14:27,793 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:27,905 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2024-10-12 18:14:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-10-12 18:14:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:27,907 INFO L225 Difference]: With dead ends: 137 [2024-10-12 18:14:27,907 INFO L226 Difference]: Without dead ends: 121 [2024-10-12 18:14:27,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:14:27,910 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:27,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-12 18:14:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-10-12 18:14:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-10-12 18:14:27,922 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 117 [2024-10-12 18:14:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:27,923 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-10-12 18:14:27,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-10-12 18:14:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-12 18:14:27,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:27,926 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:27,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:28,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 18:14:28,131 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:28,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:28,132 INFO L85 PathProgramCache]: Analyzing trace with hash 313219713, now seen corresponding path program 1 times [2024-10-12 18:14:28,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:28,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303827071] [2024-10-12 18:14:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:28,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-12 18:14:29,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:29,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303827071] [2024-10-12 18:14:29,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303827071] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:29,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666090596] [2024-10-12 18:14:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:29,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:29,365 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:29,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 18:14:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:29,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 2227 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:29,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-12 18:14:30,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:14:30,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666090596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:14:30,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:14:30,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2024-10-12 18:14:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412216449] [2024-10-12 18:14:30,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:30,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:30,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:14:30,031 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:30,105 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2024-10-12 18:14:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-10-12 18:14:30,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:30,107 INFO L225 Difference]: With dead ends: 232 [2024-10-12 18:14:30,107 INFO L226 Difference]: Without dead ends: 122 [2024-10-12 18:14:30,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:14:30,108 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:30,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-12 18:14:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-10-12 18:14:30,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.322314049586777) internal successors, (160), 121 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2024-10-12 18:14:30,115 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 120 [2024-10-12 18:14:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:30,115 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2024-10-12 18:14:30,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2024-10-12 18:14:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 18:14:30,116 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:30,116 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:30,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 18:14:30,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 18:14:30,317 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:30,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:30,318 INFO L85 PathProgramCache]: Analyzing trace with hash 675120251, now seen corresponding path program 1 times [2024-10-12 18:14:30,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:30,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855865505] [2024-10-12 18:14:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:30,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-12 18:14:31,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:31,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855865505] [2024-10-12 18:14:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855865505] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:31,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733662878] [2024-10-12 18:14:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:31,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:31,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:31,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 18:14:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:31,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:31,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-10-12 18:14:32,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-10-12 18:14:32,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733662878] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:32,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:14:32,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-12 18:14:32,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513018558] [2024-10-12 18:14:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:14:32,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:14:32,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:14:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-12 18:14:32,060 INFO L87 Difference]: Start difference. First operand 122 states and 160 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:32,160 INFO L93 Difference]: Finished difference Result 140 states and 183 transitions. [2024-10-12 18:14:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:14:32,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-10-12 18:14:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:32,162 INFO L225 Difference]: With dead ends: 140 [2024-10-12 18:14:32,162 INFO L226 Difference]: Without dead ends: 123 [2024-10-12 18:14:32,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-12 18:14:32,163 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:32,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:14:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-12 18:14:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-10-12 18:14:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-10-12 18:14:32,169 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 121 [2024-10-12 18:14:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:32,170 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-10-12 18:14:32,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-10-12 18:14:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 18:14:32,171 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:32,171 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:32,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:32,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:32,372 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:32,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash 161031331, now seen corresponding path program 1 times [2024-10-12 18:14:32,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:32,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622092280] [2024-10-12 18:14:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:32,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-10-12 18:14:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622092280] [2024-10-12 18:14:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622092280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429152102] [2024-10-12 18:14:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:33,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:33,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:33,412 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:33,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 18:14:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:34,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-12 18:14:34,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 18:14:34,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-10-12 18:14:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429152102] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:34,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:34,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2024-10-12 18:14:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14411924] [2024-10-12 18:14:34,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:34,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-12 18:14:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-12 18:14:34,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 18:14:34,682 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:37,802 INFO L93 Difference]: Finished difference Result 225 states and 308 transitions. [2024-10-12 18:14:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-12 18:14:37,803 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2024-10-12 18:14:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:37,804 INFO L225 Difference]: With dead ends: 225 [2024-10-12 18:14:37,804 INFO L226 Difference]: Without dead ends: 164 [2024-10-12 18:14:37,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 18:14:37,805 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 169 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:37,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1092 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 18:14:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-12 18:14:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2024-10-12 18:14:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 161 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 213 transitions. [2024-10-12 18:14:37,813 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 213 transitions. Word has length 122 [2024-10-12 18:14:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:37,813 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 213 transitions. [2024-10-12 18:14:37,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 213 transitions. [2024-10-12 18:14:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-12 18:14:37,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:37,815 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:37,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 18:14:38,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:38,016 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:38,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -718265104, now seen corresponding path program 2 times [2024-10-12 18:14:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:38,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500196211] [2024-10-12 18:14:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-10-12 18:14:39,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:39,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500196211] [2024-10-12 18:14:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500196211] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362622233] [2024-10-12 18:14:39,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:14:39,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:39,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:39,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:39,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 18:14:39,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:14:39,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:39,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-12 18:14:39,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-10-12 18:14:39,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-12 18:14:41,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362622233] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:41,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:41,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2024-10-12 18:14:41,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167373972] [2024-10-12 18:14:41,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:41,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-12 18:14:41,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-12 18:14:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-10-12 18:14:41,048 INFO L87 Difference]: Start difference. First operand 162 states and 213 transitions. Second operand has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:55,490 INFO L93 Difference]: Finished difference Result 310 states and 425 transitions. [2024-10-12 18:14:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-12 18:14:55,490 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-10-12 18:14:55,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:55,491 INFO L225 Difference]: With dead ends: 310 [2024-10-12 18:14:55,491 INFO L226 Difference]: Without dead ends: 213 [2024-10-12 18:14:55,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2024-10-12 18:14:55,493 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 239 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:55,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1850 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 18:14:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-12 18:14:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-10-12 18:14:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 212 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 281 transitions. [2024-10-12 18:14:55,503 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 281 transitions. Word has length 161 [2024-10-12 18:14:55,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:55,504 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 281 transitions. [2024-10-12 18:14:55,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 281 transitions. [2024-10-12 18:14:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-12 18:14:55,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:55,507 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:55,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:55,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:55,708 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:55,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 208436291, now seen corresponding path program 3 times [2024-10-12 18:14:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:55,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78960734] [2024-10-12 18:14:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:14:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:14:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-12 18:14:57,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:14:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78960734] [2024-10-12 18:14:57,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78960734] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:14:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910331237] [2024-10-12 18:14:57,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:14:57,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:57,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:14:57,531 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:14:57,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 18:14:58,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 18:14:58,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:14:58,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:14:58,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:14:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2242 trivial. 0 not checked. [2024-10-12 18:14:58,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:14:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2242 trivial. 0 not checked. [2024-10-12 18:14:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910331237] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:14:58,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:14:58,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-10-12 18:14:58,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884757192] [2024-10-12 18:14:58,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:14:58,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 18:14:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:14:58,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 18:14:58,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-10-12 18:14:58,732 INFO L87 Difference]: Start difference. First operand 213 states and 281 transitions. Second operand has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 31 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:14:59,703 INFO L93 Difference]: Finished difference Result 246 states and 325 transitions. [2024-10-12 18:14:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-12 18:14:59,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 31 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-10-12 18:14:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:14:59,705 INFO L225 Difference]: With dead ends: 246 [2024-10-12 18:14:59,705 INFO L226 Difference]: Without dead ends: 226 [2024-10-12 18:14:59,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:14:59,706 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 58 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 18:14:59,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1371 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 18:14:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-12 18:14:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2024-10-12 18:14:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.3228699551569507) internal successors, (295), 223 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 295 transitions. [2024-10-12 18:14:59,720 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 295 transitions. Word has length 212 [2024-10-12 18:14:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:14:59,720 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 295 transitions. [2024-10-12 18:14:59,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 31 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:14:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 295 transitions. [2024-10-12 18:14:59,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-10-12 18:14:59,723 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:14:59,723 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 23, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:14:59,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-12 18:14:59,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:14:59,924 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:14:59,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:14:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash -243927636, now seen corresponding path program 4 times [2024-10-12 18:14:59,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:14:59,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122486904] [2024-10-12 18:14:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:14:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:15:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:15:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2024-10-12 18:15:01,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:15:01,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122486904] [2024-10-12 18:15:01,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122486904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:15:01,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71523541] [2024-10-12 18:15:01,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:15:01,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:15:01,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:15:01,938 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:15:01,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 18:15:02,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:15:02,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:15:02,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-10-12 18:15:02,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:15:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 0 proven. 2194 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-12 18:15:03,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:15:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2024-10-12 18:15:04,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71523541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:15:04,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:15:04,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 50, 26] total 75 [2024-10-12 18:15:04,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181679176] [2024-10-12 18:15:04,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:15:04,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-10-12 18:15:04,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:15:04,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-10-12 18:15:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=4914, Unknown=0, NotChecked=0, Total=5550 [2024-10-12 18:15:04,976 INFO L87 Difference]: Start difference. First operand 224 states and 295 transitions. Second operand has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:15:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:15:08,920 INFO L93 Difference]: Finished difference Result 279 states and 374 transitions. [2024-10-12 18:15:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-12 18:15:08,921 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-10-12 18:15:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:15:08,923 INFO L225 Difference]: With dead ends: 279 [2024-10-12 18:15:08,923 INFO L226 Difference]: Without dead ends: 251 [2024-10-12 18:15:08,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=881, Invalid=5761, Unknown=0, NotChecked=0, Total=6642 [2024-10-12 18:15:08,925 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 350 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 7664 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 4224 SdHoareTripleChecker+Invalid, 7665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-12 18:15:08,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 4224 Invalid, 7665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7664 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-12 18:15:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-12 18:15:08,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-10-12 18:15:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.324) internal successors, (331), 250 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:15:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 331 transitions. [2024-10-12 18:15:08,937 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 331 transitions. Word has length 223 [2024-10-12 18:15:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:15:08,938 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 331 transitions. [2024-10-12 18:15:08,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:15:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 331 transitions. [2024-10-12 18:15:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-10-12 18:15:08,940 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:15:08,941 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:15:08,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 18:15:09,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:15:09,142 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:15:09,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:15:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1663104485, now seen corresponding path program 5 times [2024-10-12 18:15:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:15:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521866866] [2024-10-12 18:15:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:15:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:15:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:15:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3071 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-10-12 18:15:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:15:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521866866] [2024-10-12 18:15:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521866866] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:15:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147010898] [2024-10-12 18:15:10,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:15:10,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:15:10,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:15:10,454 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:15:10,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process