./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/seq-pthread/cs_szymanski.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 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:18:06,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:18:06,681 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:18:06,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:18:06,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:18:06,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:18:06,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:18:06,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:18:06,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:18:06,720 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:18:06,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:18:06,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:18:06,721 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:18:06,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:18:06,722 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:18:06,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:18:06,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:18:06,723 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:18:06,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:18:06,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:18:06,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:18:06,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:18:06,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:18:06,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:18:06,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:18:06,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:18:06,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:18:06,726 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:18:06,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:18:06,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:18:06,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:18:06,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:18:06,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:18:06,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:18:06,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:18:06,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:18:06,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:18:06,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:18:06,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:18:06,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:18:06,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:18:06,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:18:06,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 [2024-11-18 15:18:07,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:18:07,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:18:07,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:18:07,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:18:07,035 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:18:07,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_szymanski.i [2024-11-18 15:18:08,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:18:08,767 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:18:08,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_szymanski.i [2024-11-18 15:18:08,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eaca2113/d077c77627e84f19b8e1a0d6ba103f69/FLAG123479397 [2024-11-18 15:18:08,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eaca2113/d077c77627e84f19b8e1a0d6ba103f69 [2024-11-18 15:18:08,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:18:08,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:18:08,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:18:08,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:18:08,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:18:08,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:18:08" (1/1) ... [2024-11-18 15:18:08,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c873576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:08, skipping insertion in model container [2024-11-18 15:18:08,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:18:08" (1/1) ... [2024-11-18 15:18:08,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:18:09,230 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_szymanski.i[23606,23619] [2024-11-18 15:18:09,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:18:09,461 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:18:09,491 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_szymanski.i[23606,23619] [2024-11-18 15:18:09,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:18:09,606 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:18:09,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09 WrapperNode [2024-11-18 15:18:09,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:18:09,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:18:09,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:18:09,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:18:09,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,698 INFO L138 Inliner]: procedures = 145, calls = 298, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 409 [2024-11-18 15:18:09,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:18:09,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:18:09,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:18:09,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:18:09,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,744 INFO L175 MemorySlicer]: Split 144 memory accesses to 16 slices as follows [2, 6, 8, 8, 13, 8, 5, 29, 21, 7, 7, 7, 0, 5, 5, 13]. 20 percent of accesses are in the largest equivalence class. The 40 initializations are split as follows [2, 2, 3, 3, 0, 3, 0, 9, 9, 3, 3, 3, 0, 0, 0, 0]. The 36 writes are split as follows [0, 2, 2, 2, 1, 2, 1, 11, 6, 2, 2, 2, 0, 1, 1, 1]. [2024-11-18 15:18:09,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:18:09,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:18:09,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:18:09,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:18:09,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (1/1) ... [2024-11-18 15:18:09,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:18:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:09,847 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) [2024-11-18 15:18:09,856 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 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 15:18:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 15:18:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 15:18:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 15:18:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 15:18:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 15:18:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:18:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 15:18:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 15:18:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 15:18:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-18 15:18:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-18 15:18:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-18 15:18:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-18 15:18:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-18 15:18:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-18 15:18:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-18 15:18:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 15:18:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-18 15:18:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-18 15:18:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-18 15:18:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-18 15:18:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-18 15:18:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:18:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:18:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 15:18:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 15:18:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 15:18:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 15:18:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-18 15:18:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-18 15:18:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-18 15:18:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-18 15:18:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-18 15:18:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-18 15:18:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-18 15:18:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-18 15:18:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-18 15:18:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-18 15:18:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-18 15:18:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-18 15:18:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-18 15:18:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-18 15:18:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-18 15:18:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 15:18:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 15:18:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 15:18:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:18:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:18:10,218 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:18:10,221 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:18:11,001 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-18 15:18:11,001 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:18:11,020 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:18:11,023 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 15:18:11,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:18:11 BoogieIcfgContainer [2024-11-18 15:18:11,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:18:11,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:18:11,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:18:11,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:18:11,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:18:08" (1/3) ... [2024-11-18 15:18:11,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6582530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:18:11, skipping insertion in model container [2024-11-18 15:18:11,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:18:09" (2/3) ... [2024-11-18 15:18:11,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6582530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:18:11, skipping insertion in model container [2024-11-18 15:18:11,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:18:11" (3/3) ... [2024-11-18 15:18:11,035 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_szymanski.i [2024-11-18 15:18:11,054 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:18:11,054 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:18:11,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:18:11,147 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;@13bae3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:18:11,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:18:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 71 states have internal predecessors, (93), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 15:18:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 15:18:11,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:11,172 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:11,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:11,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash -290678459, now seen corresponding path program 1 times [2024-11-18 15:18:11,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135278297] [2024-11-18 15:18:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 15:18:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:11,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135278297] [2024-11-18 15:18:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135278297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:11,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:11,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:18:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843372575] [2024-11-18 15:18:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:11,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:18:11,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:11,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:18:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:11,939 INFO L87 Difference]: Start difference. First operand has 109 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 71 states have internal predecessors, (93), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 15:18:12,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:12,019 INFO L93 Difference]: Finished difference Result 220 states and 350 transitions. [2024-11-18 15:18:12,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:18:12,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 120 [2024-11-18 15:18:12,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:12,029 INFO L225 Difference]: With dead ends: 220 [2024-11-18 15:18:12,029 INFO L226 Difference]: Without dead ends: 109 [2024-11-18 15:18:12,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:12,037 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 4 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:12,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 297 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:12,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-18 15:18:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2024-11-18 15:18:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 68 states have internal predecessors, (86), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 15:18:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2024-11-18 15:18:12,102 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 120 [2024-11-18 15:18:12,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:12,103 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2024-11-18 15:18:12,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 15:18:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2024-11-18 15:18:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 15:18:12,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:12,113 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:12,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:18:12,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:12,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1184921249, now seen corresponding path program 1 times [2024-11-18 15:18:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:12,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575729441] [2024-11-18 15:18:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:12,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 15:18:12,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:12,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575729441] [2024-11-18 15:18:12,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575729441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:12,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:12,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:18:12,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594309799] [2024-11-18 15:18:12,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:12,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:18:12,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:12,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:18:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:12,502 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 15:18:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:12,543 INFO L93 Difference]: Finished difference Result 211 states and 300 transitions. [2024-11-18 15:18:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:18:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 123 [2024-11-18 15:18:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:12,546 INFO L225 Difference]: With dead ends: 211 [2024-11-18 15:18:12,546 INFO L226 Difference]: Without dead ends: 108 [2024-11-18 15:18:12,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:12,548 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:12,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 291 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-18 15:18:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-11-18 15:18:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 states have internal predecessors, (87), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 15:18:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 151 transitions. [2024-11-18 15:18:12,568 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 151 transitions. Word has length 123 [2024-11-18 15:18:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:12,568 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 151 transitions. [2024-11-18 15:18:12,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 15:18:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 151 transitions. [2024-11-18 15:18:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 15:18:12,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:12,576 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:12,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:18:12,576 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:12,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -722006623, now seen corresponding path program 1 times [2024-11-18 15:18:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817051804] [2024-11-18 15:18:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:12,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 15:18:12,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:12,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817051804] [2024-11-18 15:18:12,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817051804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236414496] [2024-11-18 15:18:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:12,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:12,890 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) [2024-11-18 15:18:12,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:18:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:13,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:18:13,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 15:18:13,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 15:18:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236414496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:13,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:13,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 15:18:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778813126] [2024-11-18 15:18:13,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:13,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:18:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:13,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:18:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:18:13,657 INFO L87 Difference]: Start difference. First operand 107 states and 151 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-18 15:18:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:13,749 INFO L93 Difference]: Finished difference Result 215 states and 305 transitions. [2024-11-18 15:18:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:18:13,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 125 [2024-11-18 15:18:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:13,754 INFO L225 Difference]: With dead ends: 215 [2024-11-18 15:18:13,754 INFO L226 Difference]: Without dead ends: 111 [2024-11-18 15:18:13,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:18:13,760 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:13,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 723 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:18:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-18 15:18:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-18 15:18:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 73 states have internal predecessors, (91), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 15:18:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 155 transitions. [2024-11-18 15:18:13,779 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 155 transitions. Word has length 125 [2024-11-18 15:18:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:13,780 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 155 transitions. [2024-11-18 15:18:13,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-18 15:18:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 155 transitions. [2024-11-18 15:18:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 15:18:13,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:13,783 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:13,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:18:13,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:13,988 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:13,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:13,989 INFO L85 PathProgramCache]: Analyzing trace with hash 680926373, now seen corresponding path program 2 times [2024-11-18 15:18:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:13,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887316507] [2024-11-18 15:18:13,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 15:18:13,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:14,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 15:18:14,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 15:18:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2024-11-18 15:18:14,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887316507] [2024-11-18 15:18:14,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887316507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:14,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:14,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:18:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556708642] [2024-11-18 15:18:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:14,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:18:14,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:18:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:18:14,326 INFO L87 Difference]: Start difference. First operand 111 states and 155 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 15:18:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:14,386 INFO L93 Difference]: Finished difference Result 207 states and 296 transitions. [2024-11-18 15:18:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:18:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-11-18 15:18:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:14,391 INFO L225 Difference]: With dead ends: 207 [2024-11-18 15:18:14,391 INFO L226 Difference]: Without dead ends: 165 [2024-11-18 15:18:14,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:14,393 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 95 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:14,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 460 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-18 15:18:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-18 15:18:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 109 states have (on average 1.2844036697247707) internal successors, (140), 109 states have internal predecessors, (140), 45 states have call successors, (45), 10 states have call predecessors, (45), 10 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2024-11-18 15:18:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 234 transitions. [2024-11-18 15:18:14,421 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 234 transitions. Word has length 129 [2024-11-18 15:18:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:14,421 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 234 transitions. [2024-11-18 15:18:14,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 15:18:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 234 transitions. [2024-11-18 15:18:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 15:18:14,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:14,425 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:14,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:18:14,427 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:14,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 42003111, now seen corresponding path program 1 times [2024-11-18 15:18:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720305372] [2024-11-18 15:18:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2024-11-18 15:18:14,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720305372] [2024-11-18 15:18:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720305372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:14,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686793818] [2024-11-18 15:18:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:14,773 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) [2024-11-18 15:18:14,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:18:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:15,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:18:15,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2024-11-18 15:18:15,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2024-11-18 15:18:15,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686793818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:15,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:15,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 15:18:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570015384] [2024-11-18 15:18:15,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:15,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:18:15,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:18:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:18:15,619 INFO L87 Difference]: Start difference. First operand 165 states and 234 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2024-11-18 15:18:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:15,685 INFO L93 Difference]: Finished difference Result 336 states and 476 transitions. [2024-11-18 15:18:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:18:15,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 198 [2024-11-18 15:18:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:15,690 INFO L225 Difference]: With dead ends: 336 [2024-11-18 15:18:15,690 INFO L226 Difference]: Without dead ends: 183 [2024-11-18 15:18:15,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:18:15,692 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 4 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:15,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 436 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-18 15:18:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-18 15:18:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 127 states have (on average 1.2598425196850394) internal successors, (160), 127 states have internal predecessors, (160), 45 states have call successors, (45), 10 states have call predecessors, (45), 10 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2024-11-18 15:18:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 254 transitions. [2024-11-18 15:18:15,710 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 254 transitions. Word has length 198 [2024-11-18 15:18:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:15,710 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 254 transitions. [2024-11-18 15:18:15,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2024-11-18 15:18:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 254 transitions. [2024-11-18 15:18:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-18 15:18:15,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:15,714 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:15,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:18:15,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:15,918 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:15,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash -655474905, now seen corresponding path program 2 times [2024-11-18 15:18:15,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:15,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943813249] [2024-11-18 15:18:15,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 15:18:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:16,060 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 15:18:16,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 15:18:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2024-11-18 15:18:16,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:16,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943813249] [2024-11-18 15:18:16,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943813249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:16,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:16,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:18:16,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217523492] [2024-11-18 15:18:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:16,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:18:16,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:18:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:18:16,314 INFO L87 Difference]: Start difference. First operand 183 states and 254 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 15:18:18,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:19,271 INFO L93 Difference]: Finished difference Result 461 states and 656 transitions. [2024-11-18 15:18:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:18:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 216 [2024-11-18 15:18:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:19,274 INFO L225 Difference]: With dead ends: 461 [2024-11-18 15:18:19,274 INFO L226 Difference]: Without dead ends: 325 [2024-11-18 15:18:19,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:19,276 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 130 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:19,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 607 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 15:18:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-18 15:18:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2024-11-18 15:18:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.267605633802817) internal successors, (270), 213 states have internal predecessors, (270), 87 states have call successors, (87), 20 states have call predecessors, (87), 20 states have return successors, (102), 87 states have call predecessors, (102), 87 states have call successors, (102) [2024-11-18 15:18:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 459 transitions. [2024-11-18 15:18:19,305 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 459 transitions. Word has length 216 [2024-11-18 15:18:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:19,305 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 459 transitions. [2024-11-18 15:18:19,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 15:18:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 459 transitions. [2024-11-18 15:18:19,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-18 15:18:19,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:19,309 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:19,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:18:19,309 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:19,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1953620305, now seen corresponding path program 1 times [2024-11-18 15:18:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:19,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443751824] [2024-11-18 15:18:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2024-11-18 15:18:20,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443751824] [2024-11-18 15:18:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443751824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:20,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:18:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916498176] [2024-11-18 15:18:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:20,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:18:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:20,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:18:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:18:20,123 INFO L87 Difference]: Start difference. First operand 321 states and 459 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 15:18:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:21,391 INFO L93 Difference]: Finished difference Result 575 states and 814 transitions. [2024-11-18 15:18:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:18:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 216 [2024-11-18 15:18:21,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:21,394 INFO L225 Difference]: With dead ends: 575 [2024-11-18 15:18:21,395 INFO L226 Difference]: Without dead ends: 295 [2024-11-18 15:18:21,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:21,396 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 126 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:21,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 611 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 15:18:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-18 15:18:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2024-11-18 15:18:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 194 states have (on average 1.2268041237113403) internal successors, (238), 194 states have internal predecessors, (238), 78 states have call successors, (78), 18 states have call predecessors, (78), 18 states have return successors, (86), 78 states have call predecessors, (86), 78 states have call successors, (86) [2024-11-18 15:18:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 402 transitions. [2024-11-18 15:18:21,420 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 402 transitions. Word has length 216 [2024-11-18 15:18:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:21,421 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 402 transitions. [2024-11-18 15:18:21,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 15:18:21,421 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 402 transitions. [2024-11-18 15:18:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-18 15:18:21,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:21,424 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:21,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:18:21,424 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:21,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash 830969787, now seen corresponding path program 1 times [2024-11-18 15:18:21,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:21,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974083002] [2024-11-18 15:18:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:21,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2024-11-18 15:18:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:22,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974083002] [2024-11-18 15:18:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974083002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:22,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347433971] [2024-11-18 15:18:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:22,105 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) [2024-11-18 15:18:22,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:18:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:22,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 15:18:22,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 288 proven. 4 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2024-11-18 15:18:22,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2024-11-18 15:18:23,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347433971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:23,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:23,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-18 15:18:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264079551] [2024-11-18 15:18:23,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:23,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:18:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:18:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:18:23,279 INFO L87 Difference]: Start difference. First operand 291 states and 402 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 9 states have call successors, (54), 5 states have call predecessors, (54), 6 states have return successors, (55), 7 states have call predecessors, (55), 9 states have call successors, (55) [2024-11-18 15:18:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:24,230 INFO L93 Difference]: Finished difference Result 575 states and 813 transitions. [2024-11-18 15:18:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:18:24,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 9 states have call successors, (54), 5 states have call predecessors, (54), 6 states have return successors, (55), 7 states have call predecessors, (55), 9 states have call successors, (55) Word has length 216 [2024-11-18 15:18:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:24,236 INFO L225 Difference]: With dead ends: 575 [2024-11-18 15:18:24,236 INFO L226 Difference]: Without dead ends: 321 [2024-11-18 15:18:24,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:18:24,240 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 201 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:24,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 596 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 15:18:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-18 15:18:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 318. [2024-11-18 15:18:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 216 states have (on average 1.2453703703703705) internal successors, (269), 218 states have internal predecessors, (269), 73 states have call successors, (73), 26 states have call predecessors, (73), 28 states have return successors, (93), 73 states have call predecessors, (93), 73 states have call successors, (93) [2024-11-18 15:18:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 435 transitions. [2024-11-18 15:18:24,271 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 435 transitions. Word has length 216 [2024-11-18 15:18:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:24,272 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 435 transitions. [2024-11-18 15:18:24,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 9 states have call successors, (54), 5 states have call predecessors, (54), 6 states have return successors, (55), 7 states have call predecessors, (55), 9 states have call successors, (55) [2024-11-18 15:18:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 435 transitions. [2024-11-18 15:18:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-18 15:18:24,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:24,276 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:24,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:18:24,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:24,481 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:24,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash -324316773, now seen corresponding path program 1 times [2024-11-18 15:18:24,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:24,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010010857] [2024-11-18 15:18:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2024-11-18 15:18:28,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:28,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010010857] [2024-11-18 15:18:28,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010010857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:28,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801363039] [2024-11-18 15:18:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:28,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:28,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:28,595 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) [2024-11-18 15:18:28,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:18:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:29,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 15:18:29,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:29,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-18 15:18:33,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 15:18:33,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 15:18:33,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2024-11-18 15:18:35,355 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2024-11-18 15:18:35,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 104 [2024-11-18 15:18:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 333 proven. 4 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2024-11-18 15:18:55,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:55,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-18 15:18:55,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-11-18 15:18:56,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-18 15:18:56,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-18 15:18:56,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-18 15:18:56,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-18 15:18:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2024-11-18 15:18:56,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801363039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:56,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:56,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 9] total 39 [2024-11-18 15:18:56,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261721551] [2024-11-18 15:18:56,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:56,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 15:18:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 15:18:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1332, Unknown=3, NotChecked=0, Total=1482 [2024-11-18 15:18:56,253 INFO L87 Difference]: Start difference. First operand 318 states and 435 transitions. Second operand has 39 states, 36 states have (on average 4.138888888888889) internal successors, (149), 36 states have internal predecessors, (149), 19 states have call successors, (64), 12 states have call predecessors, (64), 14 states have return successors, (64), 17 states have call predecessors, (64), 19 states have call successors, (64) [2024-11-18 15:19:00,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:04,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:08,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:12,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:14,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:18,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 15:19:22,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:27,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:31,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:35,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []